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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2014-05-16 11:09:45 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2014-08-18 17:01:47 -0500 |
| commit | cf81f364e898fe060dd914c255244dc5857be294 (patch) | |
| tree | ce960a18e9fa3751b3c64a3556302b2f259e6dfb /man2/access.2 | |
| parent | c71a9ed732d3b22fd64ac6dbfd2dcc4e22cb5429 (diff) | |
| download | man-pages-cf81f364e898fe060dd914c255244dc5857be294.tar.gz | |
access.2: Glibc falls back to using access() on kernels that lack faccessat()
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man2/access.2')
| -rw-r--r-- | man2/access.2 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/man2/access.2 b/man2/access.2 index 5938fc9ad2..fe0ce5b9a4 100644 --- a/man2/access.2 +++ b/man2/access.2 @@ -336,6 +336,24 @@ flags are actually implemented within the glibc wrapper function for If either of these flags is specified, then the wrapper function employs .BR fstatat (2) to determine access permissions. +.SS Glibc notes +On older kernels where +.BR faccessat () +is unavailable (and when the +.B AT_EACCESS +and +.B AT_SYMLINK_NOFOLLOW +flags are not specified), +the glibc wrapper function falls back to the use of +.BR access (). +When +.I pathname +is a relative pathname, +glibc constructs a pathname based on the symbolic link in +.IR /proc/self/fd +that corresponds to the +.IR dirfd +argument. .SH BUGS In kernel 2.4 (and earlier) there is some strangeness in the handling of .B X_OK |