sysirix.c 50.5 KB
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/*
 * sysirix.c: IRIX system call emulation.
 *
 * Copyright (C) 1996 David S. Miller
 * Copyright (C) 1997 Miguel de Icaza
 * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
 */
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/binfmts.h>
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#include <linux/capability.h>
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#include <linux/highuid.h>
#include <linux/pagemap.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/times.h>
#include <linux/elf.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/utsname.h>
#include <linux/file.h>
#include <linux/vfs.h>
#include <linux/namei.h>
#include <linux/socket.h>
#include <linux/security.h>
#include <linux/syscalls.h>

#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/uaccess.h>
#include <asm/inventory.h>

/* 2,191 lines of complete and utter shit coming up... */

extern int max_threads;

/* The sysmp commands supported thus far. */
#define MP_NPROCS       	1 /* # processor in complex */
#define MP_NAPROCS      	2 /* # active processors in complex */
#define MP_PGSIZE           	14 /* Return system page size in v1. */

asmlinkage int irix_sysmp(struct pt_regs *regs)
{
	unsigned long cmd;
	int base = 0;
	int error = 0;

	if(regs->regs[2] == 1000)
		base = 1;
	cmd = regs->regs[base + 4];
	switch(cmd) {
	case MP_PGSIZE:
		error = PAGE_SIZE;
		break;
	case MP_NPROCS:
	case MP_NAPROCS:
		error = num_online_cpus();
		break;
	default:
		printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
		       current->comm, current->pid, (int)cmd);
		error = -EINVAL;
		break;
	}

	return error;
}

/* The prctl commands. */
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#define PR_MAXPROCS		 1 /* Tasks/user. */
#define PR_ISBLOCKED		 2 /* If blocked, return 1. */
#define PR_SETSTACKSIZE		 3 /* Set largest task stack size. */
#define PR_GETSTACKSIZE		 4 /* Get largest task stack size. */
#define PR_MAXPPROCS		 5 /* Num parallel tasks. */
#define PR_UNBLKONEXEC		 6 /* When task exec/exit's, unblock. */
#define PR_SETEXITSIG		 8 /* When task exit's, set signal. */
#define PR_RESIDENT		 9 /* Make task unswappable. */
#define PR_ATTACHADDR		10 /* (Re-)Connect a vma to a task. */
#define PR_DETACHADDR		11 /* Disconnect a vma from a task. */
#define PR_TERMCHILD		12 /* Kill child if the parent dies. */
#define PR_GETSHMASK		13 /* Get the sproc() share mask. */
#define PR_GETNSHARE		14 /* Number of share group members. */
#define PR_COREPID		15 /* Add task pid to name when it core. */
#define PR_ATTACHADDRPERM	16 /* (Re-)Connect vma, with specified prot. */
#define PR_PTHREADEXIT		17 /* Kill a pthread, only for IRIX 6.[234] */

asmlinkage int irix_prctl(unsigned option, ...)
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{
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	va_list args;
	int error = 0;
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	va_start(args, option);
	switch (option) {
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	case PR_MAXPROCS:
		printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
		       current->comm, current->pid);
		error = max_threads;
		break;

	case PR_ISBLOCKED: {
		struct task_struct *task;

		printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
		       current->comm, current->pid);
		read_lock(&tasklist_lock);
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		task = find_task_by_pid(va_arg(args, pid_t));
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		error = -ESRCH;
		if (error)
			error = (task->run_list.next != NULL);
		read_unlock(&tasklist_lock);
		/* Can _your_ OS find this out that fast? */
		break;
	}

	case PR_SETSTACKSIZE: {
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		long value = va_arg(args, long);
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		printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
		       current->comm, current->pid, (unsigned long) value);
		if (value > RLIM_INFINITY)
			value = RLIM_INFINITY;
		if (capable(CAP_SYS_ADMIN)) {
			task_lock(current->group_leader);
			current->signal->rlim[RLIMIT_STACK].rlim_max =
				current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
			task_unlock(current->group_leader);
			error = value;
			break;
		}
		task_lock(current->group_leader);
		if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
			error = -EINVAL;
			task_unlock(current->group_leader);
			break;
		}
		current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
		task_unlock(current->group_leader);
		error = value;
		break;
	}

	case PR_GETSTACKSIZE:
		printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
		       current->comm, current->pid);
		error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
		break;

	case PR_MAXPPROCS:
		printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
		       current->comm, current->pid);
		error = 1;
		break;

	case PR_UNBLKONEXEC:
		printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	case PR_SETEXITSIG:
		printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
		       current->comm, current->pid);

		/* We can probably play some game where we set the task
		 * exit_code to some non-zero value when this is requested,
		 * and check whether exit_code is already set in do_exit().
		 */
		error = -EINVAL;
		break;

	case PR_RESIDENT:
		printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
		       current->comm, current->pid);
		error = 0; /* Compatibility indeed. */
		break;

	case PR_ATTACHADDR:
		printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	case PR_DETACHADDR:
		printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	case PR_TERMCHILD:
		printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	case PR_GETSHMASK:
		printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
		       current->comm, current->pid);
		error = -EINVAL; /* Until I have the sproc() stuff in. */
		break;

	case PR_GETNSHARE:
		error = 0;       /* Until I have the sproc() stuff in. */
		break;

	case PR_COREPID:
		printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	case PR_ATTACHADDRPERM:
		printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
		       current->comm, current->pid);
		error = -EINVAL;
		break;

	default:
		printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
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		       current->comm, current->pid, option);
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		error = -EINVAL;
		break;
	}
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	va_end(args);
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	return error;
}

#undef DEBUG_PROCGRPS

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extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt);
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extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
extern char *prom_getenv(char *name);
extern long prom_setenv(char *name, char *value);

/* The syssgi commands supported thus far. */
#define SGI_SYSID         1       /* Return unique per-machine identifier. */
#define SGI_INVENT        5       /* Fetch inventory  */
#   define SGI_INV_SIZEOF 1
#   define SGI_INV_READ   2
#define SGI_RDNAME        6       /* Return string name of a process. */
#define SGI_SETNVRAM	  8	  /* Set PROM variable. */
#define SGI_GETNVRAM	  9	  /* Get PROM variable. */
#define SGI_SETPGID      21       /* Set process group id. */
#define SGI_SYSCONF      22       /* POSIX sysconf garbage. */
#define SGI_PATHCONF     24       /* POSIX sysconf garbage. */
#define SGI_SETGROUPS    40       /* POSIX sysconf garbage. */
#define SGI_GETGROUPS    41       /* POSIX sysconf garbage. */
#define SGI_RUSAGE       56       /* BSD style rusage(). */
#define SGI_SSYNC        62       /* Synchronous fs sync. */
#define SGI_GETSID       65       /* SysVr4 get session id. */
#define SGI_ELFMAP       68       /* Map an elf image. */
#define SGI_TOSSTSAVE   108       /* Toss saved vma's. */
#define SGI_FP_BCOPY    129       /* Should FPU bcopy be used on this machine? */
#define SGI_PHYSP      1011       /* Translate virtual into physical page. */

asmlinkage int irix_syssgi(struct pt_regs *regs)
{
	unsigned long cmd;
	int retval, base = 0;

	if (regs->regs[2] == 1000)
		base = 1;

	cmd = regs->regs[base + 4];
	switch(cmd) {
	case SGI_SYSID: {
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		char __user *buf = (char __user *) regs->regs[base + 5];
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		/* XXX Use ethernet addr.... */
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		retval = clear_user(buf, 64) ? -EFAULT : 0;
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		break;
	}
#if 0
	case SGI_RDNAME: {
		int pid = (int) regs->regs[base + 5];
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		char __user *buf = (char __user *) regs->regs[base + 6];
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		struct task_struct *p;
		char tcomm[sizeof(current->comm)];

		read_lock(&tasklist_lock);
		p = find_task_by_pid(pid);
		if (!p) {
			read_unlock(&tasklist_lock);
			retval = -ESRCH;
			break;
		}
		get_task_comm(tcomm, p);
		read_unlock(&tasklist_lock);

		/* XXX Need to check sizes. */
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		retval = copy_to_user(buf, tcomm, sizeof(tcomm)) ? -EFAULT : 0;
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		break;
	}

	case SGI_GETNVRAM: {
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		char __user *name = (char __user *) regs->regs[base+5];
		char __user *buf = (char __user *) regs->regs[base+6];
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		char *value;
		return -EINVAL;	/* til I fix it */
		value = prom_getenv(name);	/* PROM lock?  */
		if (!value) {
			retval = -EINVAL;
			break;
		}
		/* Do I strlen() for the length? */
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		retval = copy_to_user(buf, value, 128) ? -EFAULT : 0;
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		break;
	}

	case SGI_SETNVRAM: {
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		char __user *name = (char __user *) regs->regs[base+5];
		char __user *value = (char __user *) regs->regs[base+6];
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		return -EINVAL;	/* til I fix it */
		retval = prom_setenv(name, value);
		/* XXX make sure retval conforms to syssgi(2) */
		printk("[%s:%d] setnvram(\"%s\", \"%s\"): retval %d",
		       current->comm, current->pid, name, value, retval);
/*		if (retval == PROM_ENOENT)
		  	retval = -ENOENT; */
		break;
	}
#endif

	case SGI_SETPGID: {
#ifdef DEBUG_PROCGRPS
		printk("[%s:%d] setpgid(%d, %d) ",
		       current->comm, current->pid,
		       (int) regs->regs[base + 5], (int)regs->regs[base + 6]);
#endif
		retval = sys_setpgid(regs->regs[base + 5], regs->regs[base + 6]);

#ifdef DEBUG_PROCGRPS
		printk("retval=%d\n", retval);
#endif
	}

	case SGI_SYSCONF: {
		switch(regs->regs[base + 5]) {
		case 1:
			retval = (MAX_ARG_PAGES >> 4); /* XXX estimate... */
			goto out;
		case 2:
			retval = max_threads;
			goto out;
		case 3:
			retval = HZ;
			goto out;
		case 4:
			retval = NGROUPS_MAX;
			goto out;
		case 5:
			retval = NR_OPEN;
			goto out;
		case 6:
			retval = 1;
			goto out;
		case 7:
			retval = 1;
			goto out;
		case 8:
			retval = 199009;
			goto out;
		case 11:
			retval = PAGE_SIZE;
			goto out;
		case 12:
			retval = 4;
			goto out;
		case 25:
		case 26:
		case 27:
		case 28:
		case 29:
		case 30:
			retval = 0;
			goto out;
		case 31:
			retval = 32;
			goto out;
		default:
			retval = -EINVAL;
			goto out;
		};
	}

	case SGI_SETGROUPS:
		retval = sys_setgroups((int) regs->regs[base + 5],
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		                       (gid_t __user *) regs->regs[base + 6]);
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		break;

	case SGI_GETGROUPS:
		retval = sys_getgroups((int) regs->regs[base + 5],
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		                       (gid_t __user *) regs->regs[base + 6]);
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		break;

	case SGI_RUSAGE: {
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		struct rusage __user *ru = (struct rusage __user *) regs->regs[base + 6];
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		switch((int) regs->regs[base + 5]) {
		case 0:
			/* rusage self */
			retval = getrusage(current, RUSAGE_SELF, ru);
			goto out;

		case -1:
			/* rusage children */
			retval = getrusage(current, RUSAGE_CHILDREN, ru);
			goto out;

		default:
			retval = -EINVAL;
			goto out;
		};
	}

	case SGI_SSYNC:
		sys_sync();
		retval = 0;
		break;

	case SGI_GETSID:
#ifdef DEBUG_PROCGRPS
		printk("[%s:%d] getsid(%d) ", current->comm, current->pid,
		       (int) regs->regs[base + 5]);
#endif
		retval = sys_getsid(regs->regs[base + 5]);
#ifdef DEBUG_PROCGRPS
		printk("retval=%d\n", retval);
#endif
		break;

	case SGI_ELFMAP:
		retval = irix_mapelf((int) regs->regs[base + 5],
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				     (struct elf_phdr __user *) regs->regs[base + 6],
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				     (int) regs->regs[base + 7]);
		break;

	case SGI_TOSSTSAVE:
		/* XXX We don't need to do anything? */
		retval = 0;
		break;

	case SGI_FP_BCOPY:
		retval = 0;
		break;

	case SGI_PHYSP: {
		unsigned long addr = regs->regs[base + 5];
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		int __user *pageno = (int __user *) (regs->regs[base + 6]);
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		struct mm_struct *mm = current->mm;
		pgd_t *pgdp;
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		pud_t *pudp;
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		pmd_t *pmdp;
		pte_t *ptep;

		down_read(&mm->mmap_sem);
		pgdp = pgd_offset(mm, addr);
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		pudp = pud_offset(pgdp, addr);
		pmdp = pmd_offset(pudp, addr);
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		ptep = pte_offset(pmdp, addr);
		retval = -EINVAL;
		if (ptep) {
			pte_t pte = *ptep;

			if (pte_val(pte) & (_PAGE_VALID | _PAGE_PRESENT)) {
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				/* b0rked on 64-bit */
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				retval =  put_user((pte_val(pte) & PAGE_MASK) >>
				                   PAGE_SHIFT, pageno);
			}
		}
		up_read(&mm->mmap_sem);
		break;
	}

	case SGI_INVENT: {
		int  arg1    = (int)    regs->regs [base + 5];
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		void __user *buffer = (void __user *) regs->regs [base + 6];
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		int  count   = (int)    regs->regs [base + 7];

		switch (arg1) {
		case SGI_INV_SIZEOF:
			retval = sizeof (inventory_t);
			break;
		case SGI_INV_READ:
			retval = dump_inventory_to_user (buffer, count);
			break;
		default:
			retval = -EINVAL;
		}
		break;
	}

	default:
		printk("irix_syssgi: Unsupported command %d\n", (int)cmd);
		retval = -EINVAL;
		break;
	};

out:
	return retval;
}

asmlinkage int irix_gtime(struct pt_regs *regs)
{
	return get_seconds();
}

/*
 * IRIX is completely broken... it returns 0 on success, otherwise
 * ENOMEM.
 */
asmlinkage int irix_brk(unsigned long brk)
{
	unsigned long rlim;
	unsigned long newbrk, oldbrk;
	struct mm_struct *mm = current->mm;
	int ret;

	down_write(&mm->mmap_sem);
	if (brk < mm->end_code) {
		ret = -ENOMEM;
		goto out;
	}

	newbrk = PAGE_ALIGN(brk);
	oldbrk = PAGE_ALIGN(mm->brk);
	if (oldbrk == newbrk) {
		mm->brk = brk;
		ret = 0;
		goto out;
	}

	/*
	 * Always allow shrinking brk
	 */
	if (brk <= mm->brk) {
		mm->brk = brk;
		do_munmap(mm, newbrk, oldbrk-newbrk);
		ret = 0;
		goto out;
	}
	/*
	 * Check against rlimit and stack..
	 */
	rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
	if (rlim >= RLIM_INFINITY)
		rlim = ~0;
	if (brk - mm->end_code > rlim) {
		ret = -ENOMEM;
		goto out;
	}

	/*
	 * Check against existing mmap mappings.
	 */
	if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE)) {
		ret = -ENOMEM;
		goto out;
	}

	/*
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	 * Ok, looks good - let it rip.
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	 */
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	if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk) {
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		ret = -ENOMEM;
		goto out;
	}
	mm->brk = brk;
	ret = 0;

out:
	up_write(&mm->mmap_sem);
	return ret;
}

asmlinkage int irix_getpid(struct pt_regs *regs)
{
	regs->regs[3] = current->real_parent->pid;
	return current->pid;
}

asmlinkage int irix_getuid(struct pt_regs *regs)
{
	regs->regs[3] = current->euid;
	return current->uid;
}

asmlinkage int irix_getgid(struct pt_regs *regs)
{
	regs->regs[3] = current->egid;
	return current->gid;
}

asmlinkage int irix_stime(int value)
{
	int err;
	struct timespec tv;

	tv.tv_sec = value;
	tv.tv_nsec = 0;
	err = security_settime(&tv, NULL);
	if (err)
		return err;

	write_seqlock_irq(&xtime_lock);
	xtime.tv_sec = value;
	xtime.tv_nsec = 0;
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	ntp_clear();
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	write_sequnlock_irq(&xtime_lock);

	return 0;
}

static inline void jiffiestotv(unsigned long jiffies, struct timeval *value)
{
	value->tv_usec = (jiffies % HZ) * (1000000 / HZ);
	value->tv_sec = jiffies / HZ;
}

static inline void getitimer_real(struct itimerval *value)
{
	register unsigned long val, interval;

	interval = current->it_real_incr;
	val = 0;
	if (del_timer(&current->real_timer)) {
		unsigned long now = jiffies;
		val = current->real_timer.expires;
		add_timer(&current->real_timer);
		/* look out for negative/zero itimer.. */
		if (val <= now)
			val = now+1;
		val -= now;
	}
	jiffiestotv(val, &value->it_value);
	jiffiestotv(interval, &value->it_interval);
}

asmlinkage unsigned int irix_alarm(unsigned int seconds)
{
	struct itimerval it_new, it_old;
	unsigned int oldalarm;

	if (!seconds) {
		getitimer_real(&it_old);
		del_timer(&current->real_timer);
	} else {
		it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
		it_new.it_value.tv_sec = seconds;
		it_new.it_value.tv_usec = 0;
		do_setitimer(ITIMER_REAL, &it_new, &it_old);
	}
	oldalarm = it_old.it_value.tv_sec;
	/*
	 * ehhh.. We can't return 0 if we have an alarm pending ...
	 * And we'd better return too much than too little anyway
	 */
	if (it_old.it_value.tv_usec)
		oldalarm++;

	return oldalarm;
}

asmlinkage int irix_pause(void)
{
	current->state = TASK_INTERRUPTIBLE;
	schedule();

	return -EINTR;
}

/* XXX need more than this... */
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asmlinkage int irix_mount(char __user *dev_name, char __user *dir_name,
	unsigned long flags, char __user *type, void __user *data, int datalen)
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{
	printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
	       current->comm, current->pid,
	       dev_name, dir_name, flags, type, data, datalen);

	return sys_mount(dev_name, dir_name, type, flags, data);
}

struct irix_statfs {
	short f_type;
        long  f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
	char  f_fname[6], f_fpack[6];
};

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asmlinkage int irix_statfs(const char __user *path,
	struct irix_statfs __user *buf, int len, int fs_type)
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{
	struct nameidata nd;
	struct kstatfs kbuf;
	int error, i;

	/* We don't support this feature yet. */
	if (fs_type) {
		error = -EINVAL;
		goto out;
	}
	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
		error = -EFAULT;
		goto out;
	}
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	error = user_path_walk(path, &nd);
	if (error)
		goto out;

	error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto dput_and_out;

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	error = __put_user(kbuf.f_type, &buf->f_type);
	error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
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	for (i = 0; i < 6; i++) {
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		error |= __put_user(0, &buf->f_fname[i]);
		error |= __put_user(0, &buf->f_fpack[i]);
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	}

dput_and_out:
	path_release(&nd);
out:
	return error;
}

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asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
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{
	struct kstatfs kbuf;
	struct file *file;
	int error, i;

	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
		error = -EFAULT;
		goto out;
	}
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	if (!(file = fget(fd))) {
		error = -EBADF;
		goto out;
	}

	error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto out_f;

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	error = __put_user(kbuf.f_type, &buf->f_type);
	error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);

	for (i = 0; i < 6; i++) {
		error |= __put_user(0, &buf->f_fname[i]);
		error |= __put_user(0, &buf->f_fpack[i]);
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	}

out_f:
	fput(file);
out:
	return error;
}

asmlinkage int irix_setpgrp(int flags)
{
	int error;

#ifdef DEBUG_PROCGRPS
	printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
#endif
	if(!flags)
		error = process_group(current);
	else
		error = sys_setsid();
#ifdef DEBUG_PROCGRPS
	printk("returning %d\n", process_group(current));
#endif

	return error;
}

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asmlinkage int irix_times(struct tms __user *tbuf)
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{
	int err = 0;

	if (tbuf) {
		if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
			return -EFAULT;
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		err = __put_user(current->utime, &tbuf->tms_utime);
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		err |= __put_user(current->stime, &tbuf->tms_stime);
		err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
		err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
	}

	return err;
}

asmlinkage int irix_exec(struct pt_regs *regs)
{
	int error, base = 0;
	char *filename;

	if(regs->regs[2] == 1000)
		base = 1;
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	filename = getname((char __user *) (long)regs->regs[base + 4]);
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	error = PTR_ERR(filename);
	if (IS_ERR(filename))
		return error;

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	error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
	                  NULL, regs);
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	putname(filename);

	return error;
}

asmlinkage int irix_exece(struct pt_regs *regs)
{
	int error, base = 0;
	char *filename;

	if (regs->regs[2] == 1000)
		base = 1;
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	filename = getname((char __user *) (long)regs->regs[base + 4]);
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	error = PTR_ERR(filename);
	if (IS_ERR(filename))
		return error;
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	error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
	                  (char __user * __user *) (long)regs->regs[base + 6], regs);
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	putname(filename);

	return error;
}

asmlinkage unsigned long irix_gethostid(void)
{
	printk("[%s:%d]: irix_gethostid() called...\n",
	       current->comm, current->pid);

	return -EINVAL;
}

asmlinkage unsigned long irix_sethostid(unsigned long val)
{
	printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
	       current->comm, current->pid, val);

	return -EINVAL;
}

asmlinkage int irix_socket(int family, int type, int protocol)
{
	switch(type) {
	case 1:
		type = SOCK_DGRAM;
		break;

	case 2:
		type = SOCK_STREAM;
		break;

	case 3:
		type = 9; /* Invalid... */
		break;

	case 4:
		type = SOCK_RAW;
		break;

	case 5:
		type = SOCK_RDM;
		break;

	case 6:
		type = SOCK_SEQPACKET;
		break;

	default:
		break;
	}

	return sys_socket(family, type, protocol);
}

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asmlinkage int irix_getdomainname(char __user *name, int len)
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{
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	int err;
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	down_read(&uts_sem);
	if (len > __NEW_UTS_LEN)
		len = __NEW_UTS_LEN;
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	err = copy_to_user(name, system_utsname.domainname, len) ? -EFAULT : 0;
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	up_read(&uts_sem);

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	return err;
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}

asmlinkage unsigned long irix_getpagesize(void)
{
	return PAGE_SIZE;
}

asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
			   unsigned long arg2, unsigned long arg3,
			   unsigned long arg4)
{
	switch (opcode) {
	case 0:
		return sys_msgget((key_t) arg0, (int) arg1);
	case 1:
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		return sys_msgctl((int) arg0, (int) arg1,
		                  (struct msqid_ds __user *)arg2);
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	case 2:
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		return sys_msgrcv((int) arg0, (struct msgbuf __user *) arg1,
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				  (size_t) arg2, (long) arg3, (int) arg4);
	case 3:
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		return sys_msgsnd((int) arg0, (struct msgbuf __user *) arg1,
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				  (size_t) arg2, (int) arg3);
	default:
		return -EINVAL;
	}
}

asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
			   unsigned long arg2, unsigned long arg3)
{
	switch (opcode) {
	case 0:
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		return do_shmat((int) arg0, (char __user *) arg1, (int) arg2,
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				 (unsigned long *) arg3);
	case 1:
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		return sys_shmctl((int)arg0, (int)arg1,
		                  (struct shmid_ds __user *)arg2);
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	case 2:
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		return sys_shmdt((char __user *)arg0);
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	case 3:
		return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
	default:
		return -EINVAL;
	}
}

asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
			   unsigned long arg2, int arg3)
{
	switch (opcode) {
	case 0:
		return sys_semctl((int) arg0, (int) arg1, (int) arg2,
				  (union semun) arg3);
	case 1:
		return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
	case 2:
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		return sys_semop((int) arg0, (struct sembuf __user *)arg1,
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				 (unsigned int) arg2);
	default:
		return -EINVAL;
	}
}

static inline loff_t llseek(struct file *file, loff_t offset, int origin)
{
	loff_t (*fn)(struct file *, loff_t, int);
	loff_t retval;

	fn = default_llseek;
	if (file->f_op && file->f_op->llseek)
        fn = file->f_op->llseek;
	lock_kernel();
	retval = fn(file, offset, origin);
	unlock_kernel();
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	return retval;
}

asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
                            int origin)
{
	struct file * file;
	loff_t offset;
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	int retval;
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	retval = -EBADF;
	file = fget(fd);
	if (!file)
		goto bad;
	retval = -EINVAL;
	if (origin > 2)
		goto out_putf;

	offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
	retval = (int) offset;

out_putf:
	fput(file);
bad:
	return retval;
}

asmlinkage int irix_sginap(int ticks)
{
1016
	schedule_timeout_interruptible(ticks);
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	return 0;
}

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asmlinkage int irix_sgikopt(char __user *istring, char __user *ostring, int len)
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{
	return -EINVAL;
}

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asmlinkage int irix_gettimeofday(struct timeval __user *tv)
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{
	time_t sec;
	long nsec, seq;
	int err;

	if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
		return -EFAULT;

	do {
		seq = read_seqbegin(&xtime_lock);
		sec = xtime.tv_sec;
		nsec = xtime.tv_nsec;
	} while (read_seqretry(&xtime_lock, seq));

	err = __put_user(sec, &tv->tv_sec);
	err |= __put_user((nsec / 1000), &tv->tv_usec);

	return err;
}

#define IRIX_MAP_AUTOGROW 0x40

asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
				     int flags, int fd, off_t offset)
{
	struct file *file = NULL;
	unsigned long retval;

	if (!(flags & MAP_ANONYMOUS)) {
		if (!(file = fget(fd)))
			return -EBADF;

		/* Ok, bad taste hack follows, try to think in something else
		 * when reading this.  */
		if (flags & IRIX_MAP_AUTOGROW) {
			unsigned long old_pos;
			long max_size = offset + len;

			if (max_size > file->f_dentry->d_inode->i_size) {
				old_pos = sys_lseek (fd, max_size - 1, 0);
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				sys_write (fd, (void __user *) "", 1);
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				sys_lseek (fd, old_pos, 0);
			}
		}
	}

	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);

	down_write(&current->mm->mmap_sem);
	retval = do_mmap(file, addr, len, prot, flags, offset);
	up_write(&current->mm->mmap_sem);
	if (file)
		fput(file);

	return retval;
}

asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
{
	printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
	       current->comm, current->pid, addr, len, behavior);

	return -EINVAL;
}

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asmlinkage int irix_pagelock(char __user *addr, int len, int op)
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{
	printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
	       current->comm, current->pid, addr, len, op);

	return -EINVAL;
}

asmlinkage int irix_quotactl(struct pt_regs *regs)
{
	printk("[%s:%d] Wheee.. irix_quotactl()\n",
	       current->comm, current->pid);

	return -EINVAL;
}

asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
{
	int error;

#ifdef DEBUG_PROCGRPS
	printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
	       pid, pgrp);
#endif
	if(!pid)
		pid = current->pid;

	/* Wheee, weird sysv thing... */
	if ((pgrp == 0) && (pid == current->pid))
		error = sys_setsid();
	else
		error = sys_setpgid(pid, pgrp);

#ifdef DEBUG_PROCGRPS
	printk("error = %d\n", error);
#endif

	return error;
}

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asmlinkage int irix_systeminfo(int cmd, char __user *buf, int cnt)
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{
	printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
	       current->comm, current->pid, cmd, buf, cnt);

	return -EINVAL;
}

struct iuname {
	char sysname[257], nodename[257], release[257];
	char version[257], machine[257];
	char m_type[257], base_rel[257];
	char _unused0[257], _unused1[257], _unused2[257];
	char _unused3[257], _unused4[257], _unused5[257];
};

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asmlinkage int irix_uname(struct iuname __user *buf)
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{
	down_read(&uts_sem);
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	if (copy_from_user(system_utsname.sysname, buf->sysname, 65)
	    || copy_from_user(system_utsname.nodename, buf->nodename, 65)
	    || copy_from_user(system_utsname.release, buf->release, 65)
	    || copy_from_user(system_utsname.version, buf->version, 65)
	    || copy_from_user(system_utsname.machine, buf->machine, 65)) {
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		return -EFAULT;
	}
	up_read(&uts_sem);

	return 1;
}

#undef DEBUG_XSTAT

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static int irix_xstat32_xlate(struct kstat *stat, void __user *ubuf)
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{
	struct xstat32 {
		u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
		u32 st_rdev, st_pad2[2], st_size, st_pad3;
		u32 st_atime0, st_atime1;
		u32 st_mtime0, st_mtime1;
		u32 st_ctime0, st_ctime1;
		u32 st_blksize, st_blocks;
		char st_fstype[16];
		u32 st_pad4[8];
	} ub;

	if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
		return -EOVERFLOW;
	ub.st_dev     = sysv_encode_dev(stat->dev);
	ub.st_ino     = stat->ino;
	ub.st_mode    = stat->mode;
	ub.st_nlink   = stat->nlink;
	SET_UID(ub.st_uid, stat->uid);
	SET_GID(ub.st_gid, stat->gid);
	ub.st_rdev    = sysv_encode_dev(stat->rdev);
#if BITS_PER_LONG == 32
	if (stat->size > MAX_NON_LFS)
		return -EOVERFLOW;
#endif
	ub.st_size    = stat->size;
	ub.st_atime0  = stat->atime.tv_sec;
	ub.st_atime1  = stat->atime.tv_nsec;
	ub.st_mtime0  = stat->mtime.tv_sec;
	ub.st_mtime1  = stat->atime.tv_nsec;
	ub.st_ctime0  = stat->ctime.tv_sec;
	ub.st_ctime1  = stat->atime.tv_nsec;
	ub.st_blksize = stat->blksize;
	ub.st_blocks  = stat->blocks;
	strcpy (ub.st_fstype, "efs");

	return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
}

R
Ralf Baechle 已提交
1204
static int irix_xstat64_xlate(struct kstat *stat, void __user *ubuf)
L
Linus Torvalds 已提交
1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
{
	struct xstat64 {
		u32 st_dev; s32 st_pad1[3];
		unsigned long long st_ino;
		u32 st_mode;
		u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
		s32 st_pad2[2];
		long long st_size;
		s32 st_pad3;
		struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
		s32 st_blksize;
		long long  st_blocks;
		char st_fstype[16];
		s32 st_pad4[8];
	} ks;

	if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
		return -EOVERFLOW;

	ks.st_dev = sysv_encode_dev(stat->dev);
	ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
	ks.st_ino = (unsigned long long) stat->ino;
	ks.st_mode = (u32) stat->mode;
	ks.st_nlink = (u32) stat->nlink;
	ks.st_uid = (s32) stat->uid;
	ks.st_gid = (s32) stat->gid;
	ks.st_rdev = sysv_encode_dev (stat->rdev);
	ks.st_pad2[0] = ks.st_pad2[1] = 0;
	ks.st_size = (long long) stat->size;
	ks.st_pad3 = 0;

	/* XXX hackety hack... */
	ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
	ks.st_atime.tv_nsec = stat->atime.tv_nsec;
	ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
	ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
	ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
	ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;

	ks.st_blksize = (s32) stat->blksize;
	ks.st_blocks = (long long) stat->blocks;
	memset(ks.st_fstype, 0, 16);
	ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
	ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;

	/* Now write it all back. */
	return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
}

R
Ralf Baechle 已提交
1254
asmlinkage int irix_xstat(int version, char __user *filename, struct stat __user *statbuf)
L
Linus Torvalds 已提交
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
{
	int retval;
	struct kstat stat;

#ifdef DEBUG_XSTAT
	printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
	       current->comm, current->pid, version, filename, statbuf);
#endif

	retval = vfs_stat(filename, &stat);
	if (!retval) {
		switch(version) {
			case 2:
				retval = irix_xstat32_xlate(&stat, statbuf);
				break;
			case 3:
				retval = irix_xstat64_xlate(&stat, statbuf);
				break;
			default:
				retval = -EINVAL;
		}
	}
	return retval;
}

R
Ralf Baechle 已提交
1280
asmlinkage int irix_lxstat(int version, char __user *filename, struct stat __user *statbuf)
L
Linus Torvalds 已提交
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306
{
	int error;
	struct kstat stat;

#ifdef DEBUG_XSTAT
	printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
	       current->comm, current->pid, version, filename, statbuf);
#endif

	error = vfs_lstat(filename, &stat);

	if (!error) {
		switch (version) {
			case 2:
				error = irix_xstat32_xlate(&stat, statbuf);
				break;
			case 3:
				error = irix_xstat64_xlate(&stat, statbuf);
				break;
			default:
				error = -EINVAL;
		}
	}
	return error;
}

R
Ralf Baechle 已提交
1307
asmlinkage int irix_fxstat(int version, int fd, struct stat __user *statbuf)
L
Linus Torvalds 已提交
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332
{
	int error;
	struct kstat stat;

#ifdef DEBUG_XSTAT
	printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
	       current->comm, current->pid, version, fd, statbuf);
#endif

	error = vfs_fstat(fd, &stat);
	if (!error) {
		switch (version) {
			case 2:
				error = irix_xstat32_xlate(&stat, statbuf);
				break;
			case 3:
				error = irix_xstat64_xlate(&stat, statbuf);
				break;
			default:
				error = -EINVAL;
		}
	}
	return error;
}

R
Ralf Baechle 已提交
1333
asmlinkage int irix_xmknod(int ver, char __user *filename, int mode, unsigned dev)
L
Linus Torvalds 已提交
1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
{
	int retval;
	printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
	       current->comm, current->pid, ver, filename, mode, dev);

	switch(ver) {
	case 2:
		/* shouldn't we convert here as well as on stat()? */
		retval = sys_mknod(filename, mode, dev);
		break;

	default:
		retval = -EINVAL;
		break;
	};

	return retval;
}

R
Ralf Baechle 已提交
1353
asmlinkage int irix_swapctl(int cmd, char __user *arg)
L
Linus Torvalds 已提交
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368
{
	printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
	       current->comm, current->pid, cmd, arg);

	return -EINVAL;
}

struct irix_statvfs {
	u32 f_bsize; u32 f_frsize; u32 f_blocks;
	u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
	u32 f_fsid; char f_basetype[16];
	u32 f_flag; u32 f_namemax;
	char	f_fstr[32]; u32 f_filler[16];
};

R
Ralf Baechle 已提交
1369
asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
L
Linus Torvalds 已提交
1370 1371 1372 1373 1374 1375 1376
{
	struct nameidata nd;
	struct kstatfs kbuf;
	int error, i;

	printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
	       current->comm, current->pid, fname, buf);
R
Ralf Baechle 已提交
1377 1378 1379
	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
		return -EFAULT;

L
Linus Torvalds 已提交
1380 1381 1382 1383 1384 1385 1386
	error = user_path_walk(fname, &nd);
	if (error)
		goto out;
	error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto dput_and_out;

R
Ralf Baechle 已提交
1387 1388 1389 1390 1391 1392 1393 1394
	error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
	error |= __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
L
Linus Torvalds 已提交
1395
#ifdef __MIPSEB__
R
Ralf Baechle 已提交
1396
	error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
L
Linus Torvalds 已提交
1397
#else
R
Ralf Baechle 已提交
1398
	error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
L
Linus Torvalds 已提交
1399 1400
#endif
	for (i = 0; i < 16; i++)
R
Ralf Baechle 已提交
1401 1402 1403
		error |= __put_user(0, &buf->f_basetype[i]);
	error |= __put_user(0, &buf->f_flag);
	error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
L
Linus Torvalds 已提交
1404
	for (i = 0; i < 32; i++)
R
Ralf Baechle 已提交
1405
		error |= __put_user(0, &buf->f_fstr[i]);
L
Linus Torvalds 已提交
1406 1407 1408 1409 1410 1411 1412

dput_and_out:
	path_release(&nd);
out:
	return error;
}

R
Ralf Baechle 已提交
1413
asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
L
Linus Torvalds 已提交
1414 1415 1416 1417 1418 1419 1420 1421
{
	struct kstatfs kbuf;
	struct file *file;
	int error, i;

	printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
	       current->comm, current->pid, fd, buf);

R
Ralf Baechle 已提交
1422 1423 1424
	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
		return -EFAULT;

L
Linus Torvalds 已提交
1425 1426 1427 1428 1429 1430 1431 1432
	if (!(file = fget(fd))) {
		error = -EBADF;
		goto out;
	}
	error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto out_f;

R
Ralf Baechle 已提交
1433 1434 1435 1436 1437 1438 1439 1440
	error = __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
	error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
L
Linus Torvalds 已提交
1441
#ifdef __MIPSEB__
R
Ralf Baechle 已提交
1442
	error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
L
Linus Torvalds 已提交
1443
#else
R
Ralf Baechle 已提交
1444
	error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
L
Linus Torvalds 已提交
1445 1446
#endif
	for(i = 0; i < 16; i++)
R
Ralf Baechle 已提交
1447 1448 1449 1450
		error |= __put_user(0, &buf->f_basetype[i]);
	error |= __put_user(0, &buf->f_flag);
	error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
	error |= __clear_user(&buf->f_fstr, sizeof(buf->f_fstr)) ? -EFAULT : 0;
L
Linus Torvalds 已提交
1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473

out_f:
	fput(file);
out:
	return error;
}

asmlinkage int irix_priocntl(struct pt_regs *regs)
{
	printk("[%s:%d] Wheee.. irix_priocntl()\n",
	       current->comm, current->pid);

	return -EINVAL;
}

asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
{
	printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
	       current->comm, current->pid, pid, sig, code, val);

	return -EINVAL;
}

R
Ralf Baechle 已提交
1474
asmlinkage int irix_truncate64(char __user *name, int pad, int size1, int size2)
L
Linus Torvalds 已提交
1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
{
	int retval;

	if (size1) {
		retval = -EINVAL;
		goto out;
	}
	retval = sys_truncate(name, size2);

out:
	return retval;
}

asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
{
	int retval;

	if (size1) {
		retval = -EINVAL;
		goto out;
	}
	retval = sys_ftruncate(fd, size2);

out:
	return retval;
}

asmlinkage int irix_mmap64(struct pt_regs *regs)
{
	int len, prot, flags, fd, off1, off2, error, base = 0;
	unsigned long addr, pgoff, *sp;
	struct file *file = NULL;
R
Ralf Baechle 已提交
1507
	int err;
L
Linus Torvalds 已提交
1508 1509 1510 1511 1512 1513 1514 1515 1516

	if (regs->regs[2] == 1000)
		base = 1;
	sp = (unsigned long *) (regs->regs[29] + 16);
	addr = regs->regs[base + 4];
	len = regs->regs[base + 5];
	prot = regs->regs[base + 6];
	if (!base) {
		flags = regs->regs[base + 7];
R
Ralf Baechle 已提交
1517 1518
		if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long))))
			return -EFAULT;
L
Linus Torvalds 已提交
1519
		fd = sp[0];
R
Ralf Baechle 已提交
1520 1521
		err = __get_user(off1, &sp[1]);
		err |= __get_user(off2, &sp[2]);
L
Linus Torvalds 已提交
1522
	} else {
R
Ralf Baechle 已提交
1523 1524 1525 1526 1527 1528
		if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long))))
			return -EFAULT;
		err = __get_user(flags, &sp[0]);
		err |= __get_user(fd, &sp[1]);
		err |= __get_user(off1, &sp[2]);
		err |= __get_user(off2, &sp[3]);
L
Linus Torvalds 已提交
1529 1530
	}

R
Ralf Baechle 已提交
1531 1532 1533 1534 1535
	if (err)
		return err;

	if (off1 & PAGE_MASK)
		return -EOVERFLOW;
L
Linus Torvalds 已提交
1536 1537 1538 1539

	pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);

	if (!(flags & MAP_ANONYMOUS)) {
R
Ralf Baechle 已提交
1540 1541
		if (!(file = fget(fd)))
			return -EBADF;
L
Linus Torvalds 已提交
1542 1543 1544 1545 1546 1547 1548 1549 1550

		/* Ok, bad taste hack follows, try to think in something else
		   when reading this */
		if (flags & IRIX_MAP_AUTOGROW) {
			unsigned long old_pos;
			long max_size = off2 + len;

			if (max_size > file->f_dentry->d_inode->i_size) {
				old_pos = sys_lseek (fd, max_size - 1, 0);
R
Ralf Baechle 已提交
1551
				sys_write (fd, (void __user *) "", 1);
L
Linus Torvalds 已提交
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
				sys_lseek (fd, old_pos, 0);
			}
		}
	}

	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);

	down_write(&current->mm->mmap_sem);
	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
	up_write(&current->mm->mmap_sem);

	if (file)
		fput(file);

	return error;
}

asmlinkage int irix_dmi(struct pt_regs *regs)
{
	printk("[%s:%d] Wheee.. irix_dmi()\n",
	       current->comm, current->pid);

	return -EINVAL;
}

R
Ralf Baechle 已提交
1577
asmlinkage int irix_pread(int fd, char __user *buf, int cnt, int off64,
L
Linus Torvalds 已提交
1578 1579 1580 1581 1582 1583 1584 1585
			  int off1, int off2)
{
	printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
	       current->comm, current->pid, fd, buf, cnt, off64, off1, off2);

	return -EINVAL;
}

R
Ralf Baechle 已提交
1586
asmlinkage int irix_pwrite(int fd, char __user *buf, int cnt, int off64,
L
Linus Torvalds 已提交
1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
			   int off1, int off2)
{
	printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
	       current->comm, current->pid, fd, buf, cnt, off64, off1, off2);

	return -EINVAL;
}

asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
				unsigned long arg2, unsigned long arg3,
				unsigned long arg4, unsigned long arg5)
{
	printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
	       "%08lx,%08lx)\n",
	       current->comm, current->pid, cmd, arg0, arg1, arg2,
	       arg3, arg4, arg5);

	return -EINVAL;
}

struct irix_statvfs64 {
	u32  f_bsize; u32 f_frsize;
	u64  f_blocks; u64 f_bfree; u64 f_bavail;
	u64  f_files; u64 f_ffree; u64 f_favail;
	u32  f_fsid;
	char f_basetype[16];
	u32  f_flag; u32 f_namemax;
	char f_fstr[32];
	u32  f_filler[16];
};

R
Ralf Baechle 已提交
1618
asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *buf)
L
Linus Torvalds 已提交
1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629
{
	struct nameidata nd;
	struct kstatfs kbuf;
	int error, i;

	printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
	       current->comm, current->pid, fname, buf);
	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
		error = -EFAULT;
		goto out;
	}
R
Ralf Baechle 已提交
1630

L
Linus Torvalds 已提交
1631 1632 1633 1634 1635 1636 1637
	error = user_path_walk(fname, &nd);
	if (error)
		goto out;
	error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto dput_and_out;

R
Ralf Baechle 已提交
1638 1639 1640 1641 1642 1643 1644 1645
	error = __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
	error |= __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
L
Linus Torvalds 已提交
1646
#ifdef __MIPSEB__
R
Ralf Baechle 已提交
1647
	error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
L
Linus Torvalds 已提交
1648
#else
R
Ralf Baechle 已提交
1649
	error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
L
Linus Torvalds 已提交
1650 1651
#endif
	for(i = 0; i < 16; i++)
R
Ralf Baechle 已提交
1652 1653 1654
		error |= __put_user(0, &buf->f_basetype[i]);
	error |= __put_user(0, &buf->f_flag);
	error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
L
Linus Torvalds 已提交
1655
	for(i = 0; i < 32; i++)
R
Ralf Baechle 已提交
1656
		error |= __put_user(0, &buf->f_fstr[i]);
L
Linus Torvalds 已提交
1657 1658 1659 1660 1661 1662 1663

dput_and_out:
	path_release(&nd);
out:
	return error;
}

R
Ralf Baechle 已提交
1664
asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
L
Linus Torvalds 已提交
1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684
{
	struct kstatfs kbuf;
	struct file *file;
	int error, i;

	printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
	       current->comm, current->pid, fd, buf);

	if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
		error = -EFAULT;
		goto out;
	}
	if (!(file = fget(fd))) {
		error = -EBADF;
		goto out;
	}
	error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
	if (error)
		goto out_f;

R
Ralf Baechle 已提交
1685 1686 1687 1688 1689 1690 1691 1692
	error = __put_user(kbuf.f_bsize, &buf->f_bsize);
	error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
	error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
	error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
	error |= __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
	error |= __put_user(kbuf.f_files, &buf->f_files);
	error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
	error |= __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
L
Linus Torvalds 已提交
1693
#ifdef __MIPSEB__
R
Ralf Baechle 已提交
1694
	error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
L
Linus Torvalds 已提交
1695
#else
R
Ralf Baechle 已提交
1696
	error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
L
Linus Torvalds 已提交
1697 1698
#endif
	for(i = 0; i < 16; i++)
R
Ralf Baechle 已提交
1699 1700 1701 1702
		error |= __put_user(0, &buf->f_basetype[i]);
	error |= __put_user(0, &buf->f_flag);
	error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
	error |= __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i])) ? -EFAULT : 0;
L
Linus Torvalds 已提交
1703 1704 1705 1706 1707 1708 1709

out_f:
	fput(file);
out:
	return error;
}

R
Ralf Baechle 已提交
1710
asmlinkage int irix_getmountid(char __user *fname, unsigned long __user *midbuf)
L
Linus Torvalds 已提交
1711
{
R
Ralf Baechle 已提交
1712
	int err;
L
Linus Torvalds 已提交
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724

	printk("[%s:%d] irix_getmountid(%s, %p)\n",
	       current->comm, current->pid, fname, midbuf);
	if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
		return -EFAULT;

	/*
	 * The idea with this system call is that when trying to determine
	 * 'pwd' and it's a toss-up for some reason, userland can use the
	 * fsid of the filesystem to try and make the right decision, but
	 * we don't have this so for now. XXX
	 */
R
Ralf Baechle 已提交
1725
	err = __put_user(0, &midbuf[0]);
L
Linus Torvalds 已提交
1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751
	err |= __put_user(0, &midbuf[1]);
	err |= __put_user(0, &midbuf[2]);
	err |= __put_user(0, &midbuf[3]);

	return err;
}

asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
			   unsigned long arg, unsigned long sp, int slen)
{
	printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
	       current->comm, current->pid, entry, mask, arg, sp, slen);

	return -EINVAL;
}

#undef DEBUG_GETDENTS

struct irix_dirent32 {
	u32  d_ino;
	u32  d_off;
	unsigned short  d_reclen;
	char d_name[1];
};

struct irix_dirent32_callback {
R
Ralf Baechle 已提交
1752 1753
	struct irix_dirent32 __user *current_dir;
	struct irix_dirent32 __user *previous;
L
Linus Torvalds 已提交
1754 1755 1756 1757 1758 1759 1760
	int count;
	int error;
};

#define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))

R
Ralf Baechle 已提交
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static int irix_filldir32(void *__buf, const char *name,
	int namlen, loff_t offset, ino_t ino, unsigned int d_type)
L
Linus Torvalds 已提交
1763
{
R
Ralf Baechle 已提交
1764 1765
	struct irix_dirent32 __user *dirent;
	struct irix_dirent32_callback *buf = __buf;
L
Linus Torvalds 已提交
1766
	unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
R
Ralf Baechle 已提交
1767
	int err = 0;
L
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1768 1769 1770 1771 1772 1773 1774 1775 1776 1777

#ifdef DEBUG_GETDENTS
	printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
	       reclen, namlen, buf->count);
#endif
	buf->error = -EINVAL;	/* only used if we fail.. */
	if (reclen > buf->count)
		return -EINVAL;
	dirent = buf->previous;
	if (dirent)
R
Ralf Baechle 已提交
1778
		err = __put_user(offset, &dirent->d_off);
L
Linus Torvalds 已提交
1779
	dirent = buf->current_dir;
R
Ralf Baechle 已提交
1780 1781 1782 1783 1784 1785 1786
	err |= __put_user(dirent, &buf->previous);
	err |= __put_user(ino, &dirent->d_ino);
	err |= __put_user(reclen, &dirent->d_reclen);
	err |= copy_to_user((char __user *)dirent->d_name, name, namlen) ? -EFAULT : 0;
	err |= __put_user(0, &dirent->d_name[namlen]);
	dirent = (struct irix_dirent32 __user *) ((char __user *) dirent + reclen);

L
Linus Torvalds 已提交
1787 1788 1789
	buf->current_dir = dirent;
	buf->count -= reclen;

R
Ralf Baechle 已提交
1790
	return err;
L
Linus Torvalds 已提交
1791 1792
}

R
Ralf Baechle 已提交
1793 1794
asmlinkage int irix_ngetdents(unsigned int fd, void __user * dirent,
	unsigned int count, int __user *eob)
L
Linus Torvalds 已提交
1795 1796
{
	struct file *file;
R
Ralf Baechle 已提交
1797
	struct irix_dirent32 __user *lastdirent;
L
Linus Torvalds 已提交
1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809
	struct irix_dirent32_callback buf;
	int error;

#ifdef DEBUG_GETDENTS
	printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
	       current->pid, fd, dirent, count, eob);
#endif
	error = -EBADF;
	file = fget(fd);
	if (!file)
		goto out;

R
Ralf Baechle 已提交
1810
	buf.current_dir = (struct irix_dirent32 __user *) dirent;
L
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1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849
	buf.previous = NULL;
	buf.count = count;
	buf.error = 0;

	error = vfs_readdir(file, irix_filldir32, &buf);
	if (error < 0)
		goto out_putf;

	error = buf.error;
	lastdirent = buf.previous;
	if (lastdirent) {
		put_user(file->f_pos, &lastdirent->d_off);
		error = count - buf.count;
	}

	if (put_user(0, eob) < 0) {
		error = -EFAULT;
		goto out_putf;
	}

#ifdef DEBUG_GETDENTS
	printk("eob=%d returning %d\n", *eob, count - buf.count);
#endif
	error = count - buf.count;

out_putf:
	fput(file);
out:
	return error;
}

struct irix_dirent64 {
	u64            d_ino;
	u64            d_off;
	unsigned short d_reclen;
	char           d_name[1];
};

struct irix_dirent64_callback {
R
Ralf Baechle 已提交
1850 1851
	struct irix_dirent64 __user *curr;
	struct irix_dirent64 __user *previous;
L
Linus Torvalds 已提交
1852 1853 1854 1855 1856 1857 1858
	int count;
	int error;
};

#define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))

R
Ralf Baechle 已提交
1859 1860
static int irix_filldir64(void *__buf, const char *name,
	int namlen, loff_t offset, ino_t ino, unsigned int d_type)
L
Linus Torvalds 已提交
1861
{
R
Ralf Baechle 已提交
1862 1863
	struct irix_dirent64 __user *dirent;
	struct irix_dirent64_callback * buf = __buf;
L
Linus Torvalds 已提交
1864
	unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
R
Ralf Baechle 已提交
1865
	int err = 0;
L
Linus Torvalds 已提交
1866

R
Ralf Baechle 已提交
1867 1868 1869 1870 1871
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
		return -EFAULT;

	if (__put_user(-EINVAL, &buf->error))	/* only used if we fail.. */
		return -EFAULT;
L
Linus Torvalds 已提交
1872 1873 1874 1875
	if (reclen > buf->count)
		return -EINVAL;
	dirent = buf->previous;
	if (dirent)
R
Ralf Baechle 已提交
1876
		err = __put_user(offset, &dirent->d_off);
L
Linus Torvalds 已提交
1877 1878
	dirent = buf->curr;
	buf->previous = dirent;
R
Ralf Baechle 已提交
1879 1880 1881 1882 1883 1884 1885 1886
	err |= __put_user(ino, &dirent->d_ino);
	err |= __put_user(reclen, &dirent->d_reclen);
	err |= __copy_to_user((char __user *)dirent->d_name, name, namlen)
	       ? -EFAULT : 0;
	err |= __put_user(0, &dirent->d_name[namlen]);

	dirent = (struct irix_dirent64 __user *) ((char __user *) dirent + reclen);

L
Linus Torvalds 已提交
1887 1888 1889
	buf->curr = dirent;
	buf->count -= reclen;

R
Ralf Baechle 已提交
1890
	return err;
L
Linus Torvalds 已提交
1891 1892
}

R
Ralf Baechle 已提交
1893
asmlinkage int irix_getdents64(int fd, void __user *dirent, int cnt)
L
Linus Torvalds 已提交
1894 1895
{
	struct file *file;
R
Ralf Baechle 已提交
1896
	struct irix_dirent64 __user *lastdirent;
L
Linus Torvalds 已提交
1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915
	struct irix_dirent64_callback buf;
	int error;

#ifdef DEBUG_GETDENTS
	printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
	       current->pid, fd, dirent, cnt);
#endif
	error = -EBADF;
	if (!(file = fget(fd)))
		goto out;

	error = -EFAULT;
	if (!access_ok(VERIFY_WRITE, dirent, cnt))
		goto out_f;

	error = -EINVAL;
	if (cnt < (sizeof(struct irix_dirent64) + 255))
		goto out_f;

R
Ralf Baechle 已提交
1916
	buf.curr = (struct irix_dirent64 __user *) dirent;
L
Linus Torvalds 已提交
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927
	buf.previous = NULL;
	buf.count = cnt;
	buf.error = 0;
	error = vfs_readdir(file, irix_filldir64, &buf);
	if (error < 0)
		goto out_f;
	lastdirent = buf.previous;
	if (!lastdirent) {
		error = buf.error;
		goto out_f;
	}
R
Ralf Baechle 已提交
1928 1929
	if (put_user(file->f_pos, &lastdirent->d_off))
		return -EFAULT;
L
Linus Torvalds 已提交
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
#ifdef DEBUG_GETDENTS
	printk("returning %d\n", cnt - buf.count);
#endif
	error = cnt - buf.count;

out_f:
	fput(file);
out:
	return error;
}

R
Ralf Baechle 已提交
1941
asmlinkage int irix_ngetdents64(int fd, void __user *dirent, int cnt, int *eob)
L
Linus Torvalds 已提交
1942 1943
{
	struct file *file;
R
Ralf Baechle 已提交
1944
	struct irix_dirent64 __user *lastdirent;
L
Linus Torvalds 已提交
1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965
	struct irix_dirent64_callback buf;
	int error;

#ifdef DEBUG_GETDENTS
	printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
	       current->pid, fd, dirent, cnt);
#endif
	error = -EBADF;
	if (!(file = fget(fd)))
		goto out;

	error = -EFAULT;
	if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
	    !access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
		goto out_f;

	error = -EINVAL;
	if (cnt < (sizeof(struct irix_dirent64) + 255))
		goto out_f;

	*eob = 0;
R
Ralf Baechle 已提交
1966
	buf.curr = (struct irix_dirent64 __user *) dirent;
L
Linus Torvalds 已提交
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977
	buf.previous = NULL;
	buf.count = cnt;
	buf.error = 0;
	error = vfs_readdir(file, irix_filldir64, &buf);
	if (error < 0)
		goto out_f;
	lastdirent = buf.previous;
	if (!lastdirent) {
		error = buf.error;
		goto out_f;
	}
R
Ralf Baechle 已提交
1978 1979
	if (put_user(file->f_pos, &lastdirent->d_off))
		return -EFAULT;
L
Linus Torvalds 已提交
1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041
#ifdef DEBUG_GETDENTS
	printk("eob=%d returning %d\n", *eob, cnt - buf.count);
#endif
	error = cnt - buf.count;

out_f:
	fput(file);
out:
	return error;
}

asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
{
	int retval;

	switch (op) {
	case 1:
		/* Reboot */
		printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 2:
		/* Shutdown */
		printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 4:
		/* Remount-root */
		printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 8:
		/* Kill all tasks. */
		printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 256:
		/* Set magic mushrooms... */
		printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
		       current->comm, current->pid, (int) func);
		retval = -EINVAL;
		goto out;

	default:
		printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
		       current->comm, current->pid, (int) op);
		retval = -EINVAL;
		goto out;
	};

out:
	return retval;
}

R
Ralf Baechle 已提交
2042
asmlinkage int irix_utssys(char __user *inbuf, int arg, int type, char __user *outbuf)
L
Linus Torvalds 已提交
2043 2044 2045 2046 2047 2048
{
	int retval;

	switch(type) {
	case 0:
		/* uname() */
R
Ralf Baechle 已提交
2049
		retval = irix_uname((struct iuname __user *)inbuf);
L
Linus Torvalds 已提交
2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156
		goto out;

	case 2:
		/* ustat() */
		printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 3:
		/* fusers() */
		printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	default:
		printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
		       current->comm, current->pid, (int) type);
		retval = -EINVAL;
		goto out;
	}

out:
	return retval;
}

#undef DEBUG_FCNTL

#define IRIX_F_ALLOCSP 10

asmlinkage int irix_fcntl(int fd, int cmd, int arg)
{
	int retval;

#ifdef DEBUG_FCNTL
	printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
	       current->pid, fd, cmd, arg);
#endif
	if (cmd == IRIX_F_ALLOCSP){
		return 0;
	}
	retval = sys_fcntl(fd, cmd, arg);
#ifdef DEBUG_FCNTL
	printk("%d\n", retval);
#endif
	return retval;
}

asmlinkage int irix_ulimit(int cmd, int arg)
{
	int retval;

	switch(cmd) {
	case 1:
		printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 2:
		printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 3:
		printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	case 4:
#if 0
		printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;
#endif
		retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
		goto out;

	case 5:
		printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
		       current->comm, current->pid);
		retval = -EINVAL;
		goto out;

	default:
		printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
		       current->comm, current->pid, cmd);
		retval = -EINVAL;
		goto out;
	}
out:
	return retval;
}

asmlinkage int irix_unimp(struct pt_regs *regs)
{
	printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
	       "a3=%08lx\n", current->comm, current->pid,
	       (int) regs->regs[2], (int) regs->regs[3],
	       regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);

	return -ENOSYS;
}