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* [Bug libc/10609] New: openat (and *at friends) fail to detect ENOENT
@ 2009-09-05 16:26 ebb9 at byu dot net
2009-09-05 16:43 ` [Bug libc/10609] " ebb9 at byu dot net
2009-10-30 4:34 ` drepper at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: ebb9 at byu dot net @ 2009-09-05 16:26 UTC (permalink / raw)
To: glibc-bugs
On older kernels, when __have_atfcts is false, the /proc/self/fd/%d/%s fallback
is used unconditionally, even when %s is the empty string. This ends up opening
fd (for openat), a successful stat of fd (for fstatat), etc, instead of failing
with ENOENT.
#include <fcntl.h>
int
main()
{
int fd = open (".", O_RDONLY);
if (openat (fd, "", O_RDONLY) != -1 || errno != ENOENT)
puts ("failed");
return 0;
}
--
Summary: openat (and *at friends) fail to detect ENOENT
Product: glibc
Version: 2.10
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: ebb9 at byu dot net
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10609
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^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug libc/10609] openat (and *at friends) fail to detect ENOENT 2009-09-05 16:26 [Bug libc/10609] New: openat (and *at friends) fail to detect ENOENT ebb9 at byu dot net @ 2009-09-05 16:43 ` ebb9 at byu dot net 2009-10-30 4:34 ` drepper at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: ebb9 at byu dot net @ 2009-09-05 16:43 UTC (permalink / raw) To: glibc-bugs ------- Additional Comments From ebb9 at byu dot net 2009-09-05 16:43 ------- Created an attachment (id=4171) --> (http://sourceware.org/bugzilla/attachment.cgi?id=4171&action=view) Example patch for openat This patch fixes the problem for openat, but all the other *at functions need the same treatment. -- http://sourceware.org/bugzilla/show_bug.cgi?id=10609 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug libc/10609] openat (and *at friends) fail to detect ENOENT 2009-09-05 16:26 [Bug libc/10609] New: openat (and *at friends) fail to detect ENOENT ebb9 at byu dot net 2009-09-05 16:43 ` [Bug libc/10609] " ebb9 at byu dot net @ 2009-10-30 4:34 ` drepper at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: drepper at redhat dot com @ 2009-10-30 4:34 UTC (permalink / raw) To: glibc-bugs ------- Additional Comments From drepper at redhat dot com 2009-10-30 04:34 ------- I fixed it slightly different and more efficient. -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://sourceware.org/bugzilla/show_bug.cgi?id=10609 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-10-30 4:34 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-09-05 16:26 [Bug libc/10609] New: openat (and *at friends) fail to detect ENOENT ebb9 at byu dot net 2009-09-05 16:43 ` [Bug libc/10609] " ebb9 at byu dot net 2009-10-30 4:34 ` drepper at redhat dot com
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