- 04 7月, 2016 3 次提交
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由 Szabolcs Nagy 提交于
glibc ioctl.h has it too.
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由 Szabolcs Nagy 提交于
TIOCTTYGSTRUCT, TIOCGHAYESESP, TIOCSHAYESESP and TIOCM_MODEM_BITS were removed from the linux uapi and not present in glibc ioctl.h
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由 Szabolcs Nagy 提交于
they were slightly different in musl, but should be the same: the linux uapi and glibc headers are not different.
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- 03 7月, 2016 1 次提交
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由 Rich Felker 提交于
the (unused) speed fields were omitted when these ports were first added (within this release cycle, so not present in any release yet) in accordance with how glibc defines the structure on mips archs. however their omission does not match existing musl practice/intent. glibc provides its own, mostly-unified termios structure definition and performs translation in userspace to match the kernel structure for the arch, but has gratuitous differences on a few archs like mips, presumably as a result of historical mistakes. some other libcs use the kernel definitions directly. musl essentially does that, by matching the kernel layout in the part of the structure the kernel will read/write, but leaves additional space at the end for extensibility. these are nominally the (nonstandard) speed fields and (on most archs) extra c_cc elements, but since they are not used they could be repurposed if there's ever a need.
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- 02 7月, 2016 1 次提交
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由 Rich Felker 提交于
commit 6d38c9cf provided an arm-specific version of posix_fadvise to address the alternate argument order the kernel expects on arm, but neglected to address that powerpc (32-bit) has the same issue. instead of having arch variant files in duplicate, simply put the alternate version in the top-level file under the control of a macro defined in syscall_arch.h.
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- 01 7月, 2016 1 次提交
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由 Bobby Bingham 提交于
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- 30 6月, 2016 2 次提交
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由 Rich Felker 提交于
the arm version of the syscall has a custom argument ordering to avoid needing a 7-argument syscall due to 64-bit argument alignment.
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由 Rich Felker 提交于
when commit 0b6eb2df added the parentheses around __syscall to invoke the function directly, there was no __syscall7 in the syscall macro infrastructure, so this hack was needed. commit 9a3bbce4 fixed that but failed to remove the hack.
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- 29 6月, 2016 4 次提交
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由 Natanael Copa 提交于
loop over an address family / resource record mapping to avoid repetitive code.
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由 Natanael Copa 提交于
don't send a query that may be malformed.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
the kernel ABI value for RUSAGE_CHILDREN is -1, not 1. the latter is actually interpreted as RUSAGE_THREAD, to obtain values for just the calling thread and not the whole process.
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- 28 6月, 2016 2 次提交
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由 Rich Felker 提交于
mistakenly ordering strings before addresses in the result buffer broke the alignment that the preceding code had set up.
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由 Rich Felker 提交于
Linux's documentation (robust-futex-ABI.txt) claims that, when a process dies with a futex on the robust list, bit 30 (0x40000000) is set to indicate the status. however, what actually happens is that bits 0-30 are replaced with the value 0x40000000, i.e. bits 0-29 (containing the old owner tid) are cleared at the same time bit 30 is set. our userspace-side code for robust mutexes was written based on that documentation, assuming that kernel would never produce a futex value of 0x40000000, since the low (owner) bits would always be non-zero. commit d338b506 introduced this assumption explicitly while fixing another bug in how non-recoverable status for robust mutexes was tracked. presumably the tests conducted at that time only checked non-process-shared robust mutexes, which are handled in pthread_exit (which implemented the documented kernel protocol, not the actual one) rather than by the kernel. change pthread_exit robust list processing to match the kernel behavior, clearing bits 0-29 while setting bit 30, and use the value 0x7fffffff instead of 0x40000000 to encode non-recoverable status. the choice of value here is arbitrary; any value with at least one of bits 0-29 set should work just as well,
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- 22 6月, 2016 1 次提交
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由 Rich Felker 提交于
despite clarifications made to the COPYRIGHT file in commit f0a61399, there continues to be confusion about whether the permissions granted actually apply to all files. I am the sole author of these files and clearly intend, and have always intended, for the grant of permission to apply to them.
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- 10 6月, 2016 8 次提交
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由 Rich Felker 提交于
compilers are free not to copy, or in some cases to clobber, padding bytes in a structure. while it's an aliasing violation, and thus undefined behavior, to copy or manipulate other sockaddr types using sockaddr_storage, it seems likely that traditional code attempts to do so, and the original intent of the sockaddr_storage structure was probably to allow such usage. in the interest of avoiding silent and potentially dangerous breakage, ensure that there are no actual padding bytes in sockaddr_storage by moving and adjusting the size of the __ss_padding member so that it fits exactly. this change also removes a silent assumption that the alignment of long is equal to its size.
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由 Szabolcs Nagy 提交于
kernel connection multiplexor macros AF_KCM, PF_KCM, SOL_KCM were added in linux commit ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 MSG_BATCH sendmsg flag for performance optimization was added in linux commit f092276d85b82504e8a07498f4e9e0c51f06745c SOL_* macros are now synced with linux socket.h which is not a uapi header and glibc did not have the macros either, but that has changed http://sourceware.org/ml/libc-alpha/2016-05/msg00322.html
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由 Szabolcs Nagy 提交于
new fields and associated linux commit: tcpi_notsent_bytes, tcpi_min_rtt cd9b266095f422267bddbec88f9098b48ea548fc tcpi_data_segs_in, tcpi_data_segs_out a44d6eacdaf56f74fad699af7f4925a5f5ac0e7f
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由 Szabolcs Nagy 提交于
flag for new cgroup namespace, added in linux commit 5e2bec7c2248ae27c5b16cd97215ae05c1d39179
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由 Szabolcs Nagy 提交于
x86 protection key faults are reported in the si_pkey field, added in linux commit cd0ea35ff5511cde299a61c21a95889b4a71464e
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由 Szabolcs Nagy 提交于
ethertype for macsec added in linux commit dece8d2b78d19df7fe5e4e965f1f0d1a3e188d1b
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由 Szabolcs Nagy 提交于
new socket option so application can give advice about routing path quality of connected udp sockets, added in linux commit a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314
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由 Szabolcs Nagy 提交于
the syscalls take an additional flag argument, they were added in commit f17d8b35452cab31a70d224964cd583fb2845449 and a RWF_HIPRI priority hint flag was added to linux/fs.h in 97be7ebe53915af504fb491fb99f064c7cf3cb09. the syscall is not allocated for microblaze and sh yet.
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- 24 5月, 2016 1 次提交
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由 Rich Felker 提交于
the difference of pointers is a signed type ptrdiff_t; if it is only 32-bit, left-shifting it by 30 bits produces undefined behavior. cast the difference to an appropriate unsigned type, uint32_t, before shifting to avoid this. the a64l function is specified to return a signed 32-bit result in type long. as noted in the bug report by Ed Schouten, converting implicitly from uint32_t only produces the desired result when long is a 32-bit type. since the computation has to be done in unsigned arithmetic to avoid overflow, simply cast the result to int32_t. further, POSIX leaves the behavior on invalid input unspecified but not undefined, so we should not take the difference between the potentially-null result of strchr and the base pointer without first checking the result. the simplest behavior is just returning the partial conversion already performed in this case, so do that.
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- 23 5月, 2016 2 次提交
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由 Rich Felker 提交于
previously, the only way the stopping condition could be met with correct lengths in the headers invoked undefined behavior, adding sizeof(struct cmsghdr) beyond the end of the cmsg buffer. instead, compute and compare sizes rather than pointers.
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由 Szabolcs Nagy 提交于
the num_submatches field of some ast nodes was not initialized in tre_add_tag_{left,right}, but was accessed later. this was a benign bug since the uninitialized values were never used (these values are created during tre_add_tags and copied around during tre_expand_ast where they are also used in computations, but nothing in the final tnfa depends on them).
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- 12 5月, 2016 3 次提交
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由 Bobby Bingham 提交于
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由 Bobby Bingham 提交于
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由 Bobby Bingham 提交于
These system calls are already all remapped in an arch-agnostic manner in src/internal/syscall.h
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- 09 5月, 2016 2 次提交
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由 Rich Felker 提交于
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由 Bobby Bingham 提交于
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- 05 5月, 2016 2 次提交
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由 LeMay, Michael 提交于
The --build flag is listed in two case statement entries in configure, which causes the second entry to be ignored. This patch removes it from the first entry. Signed-off-by: NMichael LeMay <michael.lemay@intel.com>
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由 Andrew Kelley 提交于
previously if you called getprotobyname("egp") you would get NULL because \008 is invalid octal and so the protocol id was interpreted as 0 and name as "8egp".
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- 30 4月, 2016 1 次提交
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由 Rich Felker 提交于
the standard configure interface, which our configure script tries to implement, identifies cross compiling (build != host) and searches for the properly-prefixed cross tools. our script was not doing that, forcing users to explicitly provide either CC or a CROSS_COMPILE tool prefix, and the more common choice, just providing CC, was incomplete because the Makefile would still invoke the native ar and ranlib programs. this happened to work when building on ELF-based systems with GNU binutils, but could easily fail when cross-compiling from dissimilar systems. like before, and like the standard configure behavior, an explicit CC or CROSS_COMPILE variable on the command line or in the environment overrides the automatic prefixing.
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- 29 4月, 2016 1 次提交
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由 Rich Felker 提交于
these changes are the outcome of a long mailing list thread that took place March 2016, "musl licensing". among minor other issues, prospective users were not confident that the whole-project MIT license would grant permission for files to which the COPYRIGHT file expressed a belief that copyright not apply, if it turned out that these files were actually subject to copyright. in accordance with the original intent of applying a permissive license to the project, which was that license issues not be an obstacle to use, the text which was causing confusion is removed. no new claims of copyright are made, but new text is added to clarify that the grant of permissions applies to all files, and an explicit grant of permission to use public headers and crt files without attribution has been made. this patch was reviewed and approved by all substantial contributors to the affected files: Bobby Bingham, John Spencer (rofl0r), Nicholas J. Kain, Rich Felker, Richard Pennington, Stefan Kristiansson, and Szabolcs Nagy.
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- 27 4月, 2016 1 次提交
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由 Rich Felker 提交于
commit 7e816a64 (version 1.1.11 release cycle) moved the code that performs wchar_t to multibyte conversion across code that used the resulting length in bytes, thereby breaking the unget buffer space check in ungetwc and clobbering up to three bytes below the start of the buffer. for allocated FILEs (all read-enabled FILEs except stdin), the underflow clobbers at most the FILE-specific locale pointer. no stores are performed through this pointer, but subsequent loads may result in a crash or mismatching encoding rule (UTF-8 multibyte vs byte-based). for stdin, the buffer lies in .bss and the underflow may clobber another object. in practice, for libc.so the adjacent object seems to be stderr's buffer, which is completely unused, but this could vary with linking options, or when static linking. applications which do not attempt to use more than one character of ungetwc pushback, or which do not use ungetwc, are not affected.
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- 26 4月, 2016 1 次提交
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由 Rich Felker 提交于
per the powerpc psabi, offset 4 of the stack at call time belongs to the callee and is used for spilling lr (return address). in addition, offset 0 on the stack must contain a pointer to the previous stack frame, or a null pointer for the initial stack frame of a thread. __clone failed to setup any stack frame on the new thread's stack, thereby allowing the start function it called to clobber offset 4 of the new thread's struct __pthread, which contains the dtv pointer. add code to setup a proper stack frame and align the stack pointer to a multiple of 16 (also an abi requirement) if it was not already aligned.
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- 18 4月, 2016 2 次提交
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由 Petr Vaněk 提交于
The variable nss is set to zero in following line.
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由 Rich Felker 提交于
based on patch submitted by Jaydeep Patil, with minor changes.
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- 03 4月, 2016 1 次提交
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由 Rich Felker 提交于
mips32r6 and mips64r6 are actually new isas at both the asm source and opcode levels (pre-r6 code cannot run on r6) and thus need to be treated as a new subarch. the following changes are made, some of which yield code generation improvements for non-r6 targets too: - add subarch logic in configure script and reloc.h files for dynamic linker name. - suppress use of .set mips2 asm directives (used to allow mips2 atomic instructions on baseline mips1 builds; the kernel has to emulate them on mips1) except when actually needed. they cause wrong instruction encodings on r6, and pessimize inlining on at least some compilers. - only hard-code sync instruction encoding on mips1. - use "ZC" constraint instead of "m" constraint for llsc memory operands on r6, where the ll/sc instructions no longer accept full 16-bit offsets. - only hard-code rdhwr instruction encoding with .word on targets (pre-r2) where it may need trap-and-emulate by the kernel. otherwise, just use the instruction mnemonic, and allow an arbitrary destination register to be used.
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