cvs commit: src/sys/conf files src/sys/fs/tmpfs tmpfs.h tmpfs_subr.c tmpfs_vnops.c src/sys/i386/i386 bios.c src/sys/ia64/ia64 efi.c sal.c src/sys/libkern memcmp.c src/sys/mips/mips support.S src/sys/sys libkern.h

[David E. O'Brien]

obrien      2008-09-23 14:45:10 UTC

  FreeBSD src repository

  Modified files:
    sys/conf             files 
    sys/fs/tmpfs         tmpfs.h tmpfs_subr.c tmpfs_vnops.c 
    sys/i386/i386        bios.c 
    sys/ia64/ia64        efi.c sal.c 
    sys/mips/mips        support.S 
    sys/sys              libkern.h 
  Added files:
    sys/libkern          memcmp.c 
  Log:
  SVN rev 183299 on 2008-09-23 14:45:10Z by obrien
  
  The kernel implemented 'memcmp' is an alias for 'bcmp'.  However, memcmp
  and bcmp are not the same thing.  'man bcmp' states that the return is
  "non-zero" if the two byte strings are not identical.  Where as,
  'man memcmp' states that the return is the "difference between the
  first two differing bytes (treated as unsigned char values" if the
  two byte strings are not identical.
  
  So provide a proper memcmp(9), but it is a C implementation not a tuned
  assembly implementation.  Therefore bcmp(9) should be preferred over memcmp(9).
  
  Revision  Changes    Path
  1.1334    +1 -0      src/sys/conf/files
  1.15      +1 -1      src/sys/fs/tmpfs/tmpfs.h
  1.19      +1 -1      src/sys/fs/tmpfs/tmpfs_subr.c
  1.24      +1 -1      src/sys/fs/tmpfs/tmpfs_vnops.c
  1.75      +1 -1      src/sys/i386/i386/bios.c
  1.6       +1 -1      src/sys/ia64/ia64/efi.c
  1.16      +1 -1      src/sys/ia64/ia64/sal.c
  1.1       +53 -0     src/sys/libkern/memcmp.c (new)
  1.2       +0 -2      src/sys/mips/mips/support.S
  1.59      +1 -6      src/sys/sys/libkern.h