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| author | Ulrich Drepper <drepper@redhat.com> | 1998-10-29 15:17:25 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-10-29 15:17:25 +0000 |
| commit | c5e340c71ba6f4563ca5fa245baa82b6363ddb2e (patch) | |
| tree | 3ff655dfee624df411e1f3ebc062181fc0f3f338 /sysdeps/unix/sysv/linux/ttyname_r.c | |
| parent | 05e951cd1ae7917ce25ec96cc17ebcbf401e345c (diff) | |
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Update.
1998-10-29 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/ttyname_r.c (ttyname_r): Try reading
/prof/self/fd/FD first.
* sysdeps/unix/sysv/linux/ttyname.c (ttyname): Likewise.
* stdio-common/_itoa.h (_fitoa_word): New inline function. Write
formatted number starting at given position and return pointer to
following byte.
(_fitoa): Likewise, for long long.
Diffstat (limited to 'sysdeps/unix/sysv/linux/ttyname_r.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ttyname_r.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ttyname_r.c b/sysdeps/unix/sysv/linux/ttyname_r.c index 9c859caa25..8306cf56c0 100644 --- a/sysdeps/unix/sysv/linux/ttyname_r.c +++ b/sysdeps/unix/sysv/linux/ttyname_r.c @@ -26,6 +26,8 @@ #include <string.h> #include <stdlib.h> +#include <stdio-common/_itoa.h> + static int getttyname_r __P ((int fd, char *buf, size_t buflen, dev_t mydev, ino_t myino, int save, int *dostat)) internal_function; @@ -102,6 +104,7 @@ __ttyname_r (fd, buf, buflen) char *buf; size_t buflen; { + char procname[30]; struct stat st, st1; int dostat = 0; int save = errno; @@ -127,6 +130,18 @@ __ttyname_r (fd, buf, buflen) return ENOTTY; } + /* We try using the /proc filesystem. */ + *_fitoa_word (fd, __stpcpy (procname, "/proc/self/fd/"), 10, 0) = '\0'; + + ret = __readlink (procname, buf, buflen - 1); + if (ret != -1) + return 0; + if (errno == ENAMETOOLONG) + { + __set_errno (ERANGE); + return ERANGE; + } + if (fstat (fd, &st) < 0) return errno; |