diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/readlinkat.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/readlinkat.c | 60 |
1 files changed, 3 insertions, 57 deletions
diff --git a/sysdeps/unix/sysv/linux/readlinkat.c b/sysdeps/unix/sysv/linux/readlinkat.c index 7d096d3c36..8755fc8fe0 100644 --- a/sysdeps/unix/sysv/linux/readlinkat.c +++ b/sysdeps/unix/sysv/linux/readlinkat.c @@ -23,9 +23,10 @@ #include <string.h> #include <sysdep.h> #include <unistd.h> -#include <kernel-features.h> +/* Consider moving to syscalls.list. */ + /* Read the contents of the symbolic link PATH relative to FD into no more than LEN bytes of BUF. */ ssize_t @@ -35,61 +36,6 @@ readlinkat (fd, path, buf, len) char *buf; size_t len; { - int result; - -#ifdef __NR_readlinkat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - result = INLINE_SYSCALL (readlinkat, 4, fd, path, buf, len); -# ifndef __ASSUME_ATFCTS - if (result == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return result; - } -#endif - -#ifndef __ASSUME_ATFCTS - char *pathbuf = NULL; - - if (fd != AT_FDCWD && path[0] != '/') - { - size_t pathlen = strlen (path); - if (__glibc_unlikely (pathlen == 0)) - { - __set_errno (ENOENT); - return -1; - } - - static const char procfd[] = "/proc/self/fd/%d/%s"; - /* Buffer for the path name we are going to use. It consists of - - the string /proc/self/fd/ - - the file descriptor number - - the file name provided. - The final NUL is included in the sizeof. A bit of overhead - due to the format elements compensates for possible negative - numbers. */ - size_t buflen = sizeof (procfd) + sizeof (int) * 3 + pathlen; - pathbuf = __alloca (buflen); - - __snprintf (pathbuf, buflen, procfd, fd, path); - path = pathbuf; - } - - INTERNAL_SYSCALL_DECL (err); - - result = INTERNAL_SYSCALL (readlink, err, 3, path, buf, len); - - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err))) - { - __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, pathbuf); - result = -1; - } - - return result; -#endif + return INLINE_SYSCALL (readlinkat, 4, fd, path, buf, len); } libc_hidden_def (readlinkat) |