about summary refs log tree commit diff
path: root/sysdeps
diff options
context:
space:
mode:
authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-12-29 11:37:34 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-01-05 11:33:16 -0300
commitc6e0b0b5b0b7922cdf0dce2af671e0c7e500df95 (patch)
tree01d0121e7f7492d2710a4d13c773cf8669315759 /sysdeps
parent448a256359e951fd2e81ccb2926e3f2b1d7a09de (diff)
downloadglibc-c6e0b0b5b0b7922cdf0dce2af671e0c7e500df95.tar.gz
glibc-c6e0b0b5b0b7922cdf0dce2af671e0c7e500df95.tar.xz
glibc-c6e0b0b5b0b7922cdf0dce2af671e0c7e500df95.zip
stdlib: Sync canonicalize with gnulib [BZ #10635] [BZ #26592] [BZ #26341] [BZ #24970]
It sync with gnulib version ae9fb3d66.  The testcase for BZ#23741
(stdlib/test-bz22786.c) is adjusted to check also for ENOMEM.

The patch fixes multiple realpath issues:

  - Portability fixes for errno clobbering on free (BZ#10635).  The
    function does not call free directly anymore, although it might be
    done through scratch_buffer_free.  The free errno clobbering is
    being tracked by BZ#17924.

  - Pointer arithmetic overflows in realpath (BZ#26592).

  - Realpath cyclically call __alloca(path_max) to consume too much
    stack space (BZ#26341).

  - Realpath mishandles EOVERFLOW; stat not needed anyway (BZ#24970).
    The check is done through faccessat now.

Checked on x86_64-linux-gnu and i686-linux-gnu.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/faccessat.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/faccessat.c b/sysdeps/unix/sysv/linux/faccessat.c
index ccf559ccf8..13160d3249 100644
--- a/sysdeps/unix/sysv/linux/faccessat.c
+++ b/sysdeps/unix/sysv/linux/faccessat.c
@@ -24,7 +24,7 @@
 
 
 int
-faccessat (int fd, const char *file, int mode, int flag)
+__faccessat (int fd, const char *file, int mode, int flag)
 {
   int ret = INLINE_SYSCALL_CALL (faccessat2, fd, file, mode, flag);
 #if __ASSUME_FACCESSAT2
@@ -73,3 +73,4 @@ faccessat (int fd, const char *file, int mode, int flag)
   return INLINE_SYSCALL_ERROR_RETURN_VALUE (EACCES);
 #endif /* !__ASSUME_FACCESSAT2 */
 }
+weak_alias (__faccessat, faccessat)