1. 23 9月, 2006 1 次提交
  2. 30 6月, 2006 1 次提交
    • C
      [AF_UNIX]: Datagram getpeersec · 877ce7c1
      Catherine Zhang 提交于
      This patch implements an API whereby an application can determine the
      label of its peer's Unix datagram sockets via the auxiliary data mechanism of
      recvmsg.
      
      Patch purpose:
      
      This patch enables a security-aware application to retrieve the
      security context of the peer of a Unix datagram socket.  The application
      can then use this security context to determine the security context for
      processing on behalf of the peer who sent the packet.
      
      Patch design and implementation:
      
      The design and implementation is very similar to the UDP case for INET
      sockets.  Basically we build upon the existing Unix domain socket API for
      retrieving user credentials.  Linux offers the API for obtaining user
      credentials via ancillary messages (i.e., out of band/control messages
      that are bundled together with a normal message).  To retrieve the security
      context, the application first indicates to the kernel such desire by
      setting the SO_PASSSEC option via getsockopt.  Then the application
      retrieves the security context using the auxiliary data mechanism.
      
      An example server application for Unix datagram socket should look like this:
      
      toggle = 1;
      toggle_len = sizeof(toggle);
      
      setsockopt(sockfd, SOL_SOCKET, SO_PASSSEC, &toggle, &toggle_len);
      recvmsg(sockfd, &msg_hdr, 0);
      if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) {
          cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr);
          if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) &&
              cmsg_hdr->cmsg_level == SOL_SOCKET &&
              cmsg_hdr->cmsg_type == SCM_SECURITY) {
              memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext));
          }
      }
      
      sock_setsockopt is enhanced with a new socket option SOCK_PASSSEC to allow
      a server socket to receive security context of the peer.
      
      Testing:
      
      We have tested the patch by setting up Unix datagram client and server
      applications.  We verified that the server can retrieve the security context
      using the auxiliary data mechanism of recvmsg.
      Signed-off-by: NCatherine Zhang <cxzhang@watson.ibm.com>
      Acked-by: NAcked-by: James Morris <jmorris@namei.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      877ce7c1
  3. 26 4月, 2006 1 次提交
  4. 25 4月, 2006 1 次提交
  5. 22 3月, 2006 1 次提交
  6. 21 3月, 2006 1 次提交
  7. 04 1月, 2006 1 次提交
    • E
      [NET]: move struct proto_ops to const · 90ddc4f0
      Eric Dumazet 提交于
      I noticed that some of 'struct proto_ops' used in the kernel may share
      a cache line used by locks or other heavily modified data. (default
      linker alignement is 32 bytes, and L1_CACHE_LINE is 64 or 128 at
      least)
      
      This patch makes sure a 'struct proto_ops' can be declared as const,
      so that all cpus can share all parts of it without false sharing.
      
      This is not mandatory : a driver can still use a read/write structure
      if it needs to (and eventually a __read_mostly)
      
      I made a global stubstitute to change all existing occurences to make
      them const.
      
      This should reduce the possibility of false sharing on SMP, and
      speedup some socket system calls.
      Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      90ddc4f0
  8. 07 11月, 2005 1 次提交
    • R
      [PATCH] kernel-doc: fix some kernel-api warnings · 8f2709b5
      Randy Dunlap 提交于
      Fix various warnings in kernel-doc:
      
      Warning(linux-2614-rc4//include/linux/net.h:89): Enum value 'SOCK_DCCP' not described in enum 'sock_type'
      
      usercopy.c: should use !E instead of !I for exported symbols:
      Warning(linux-2614-rc4//arch/i386/lib/usercopy.c): no structured comments found
      
      fs.h does not need to use !E since it has no exported symbols:
      Warning(linux-2614-rc4//include/linux/fs.h:1182): No description found for parameter 'find_exported_dentry'
      Warning(linux-2614-rc4//include/linux/fs.h): no structured comments found
      
      irq/manage.c should use !E for its exported symbols:
      Warning(linux-2614-rc4//kernel/irq/manage.c): no structured comments found
      
      macmodes.c should use !E for its exported symbols:
      Warning(linux-2614-rc4//drivers/video/macmodes.c): no structured comments found
      Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      8f2709b5
  9. 30 8月, 2005 3 次提交
  10. 24 5月, 2005 1 次提交
  11. 06 5月, 2005 1 次提交
  12. 01 5月, 2005 1 次提交
    • P
      [PATCH] DocBook: changes and extensions to the kernel documentation · 4dc3b16b
      Pavel Pisa 提交于
      I have recompiled Linux kernel 2.6.11.5 documentation for me and our
      university students again.  The documentation could be extended for more
      sources which are equipped by structured comments for recent 2.6 kernels.  I
      have tried to proceed with that task.  I have done that more times from 2.6.0
      time and it gets boring to do same changes again and again.  Linux kernel
      compiles after changes for i386 and ARM targets.  I have added references to
      some more files into kernel-api book, I have added some section names as well.
       So please, check that changes do not break something and that categories are
      not too much skewed.
      
      I have changed kernel-doc to accept "fastcall" and "asmlinkage" words reserved
      by kernel convention.  Most of the other changes are modifications in the
      comments to make kernel-doc happy, accept some parameters description and do
      not bail out on errors.  Changed <pid> to @pid in the description, moved some
      #ifdef before comments to correct function to comments bindings, etc.
      
      You can see result of the modified documentation build at
        http://cmp.felk.cvut.cz/~pisa/linux/lkdb-2.6.11.tar.gz
      
      Some more sources are ready to be included into kernel-doc generated
      documentation.  Sources has been added into kernel-api for now.  Some more
      section names added and probably some more chaos introduced as result of quick
      cleanup work.
      Signed-off-by: NPavel Pisa <pisa@cmp.felk.cvut.cz>
      Signed-off-by: NMartin Waitz <tali@admingilde.org>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      4dc3b16b
  13. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4