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Diffstat (limited to 'man2')
| -rw-r--r-- | man2/readlink.2 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/man2/readlink.2 b/man2/readlink.2 index 19102e1769..989f7daa1f 100644 --- a/man2/readlink.2 +++ b/man2/readlink.2 @@ -253,6 +253,19 @@ also addresses a common portability problem when using for the buffer size, as this constant is not guaranteed to be defined per POSIX if the system does not have such limit. +.SS Glibc notes +On older kernels where +.BR readlinkat () +is unavailable, the glibc wrapper function falls back to the use of +.BR readlink (). +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 EXAMPLE The following program allocates the buffer needed by .BR readlink () |