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author | Florian Weimer <fweimer@redhat.com> | 2017-04-13 21:28:18 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2017-04-13 21:28:18 +0200 |
commit | a12ae89f860229cbe5ba91f1f9cf17cc5a9ede31 (patch) | |
tree | 3b22b435b0081a1f52f68db25d66b253d0b71337 /csu/check_fds.c | |
parent | 44500cbb25bc6e76723304b9ff39f875c04309f9 (diff) | |
download | glibc-a12ae89f860229cbe5ba91f1f9cf17cc5a9ede31.tar.gz glibc-a12ae89f860229cbe5ba91f1f9cf17cc5a9ede31.tar.xz glibc-a12ae89f860229cbe5ba91f1f9cf17cc5a9ede31.zip |
Assume that O_NOFOLLOW is always defined
Diffstat (limited to 'csu/check_fds.c')
-rw-r--r-- | csu/check_fds.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/csu/check_fds.c b/csu/check_fds.c index bec2a5372c..062c879373 100644 --- a/csu/check_fds.c +++ b/csu/check_fds.c @@ -87,14 +87,10 @@ check_one_fd (int fd, int mode) void __libc_check_standard_fds (void) { - /* This is really paranoid but some people actually are. If /dev/null - should happen to be a symlink to somewhere else and not the device - commonly known as "/dev/null" we bail out. We can detect this with - the O_NOFOLLOW flag for open() but only on some system. */ -#ifndef O_NOFOLLOW -# define O_NOFOLLOW 0 -#endif - /* Check all three standard file descriptors. */ + /* Check all three standard file descriptors. The O_NOFOLLOW flag + is really paranoid but some people actually are. If /dev/null + should happen to be a symlink to somewhere else and not the + device commonly known as "/dev/null" we bail out. */ check_one_fd (STDIN_FILENO, O_WRONLY | O_NOFOLLOW); check_one_fd (STDOUT_FILENO, O_RDONLY | O_NOFOLLOW); check_one_fd (STDERR_FILENO, O_RDONLY | O_NOFOLLOW); |