diff options
| author | Matt Whitlock <busybox@mattwhitlock.name> | 2015-04-25 21:32:48 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2015-04-25 21:32:48 +0200 |
| commit | cee59053dcf47b4a3ab87f7654c1ed20620def16 (patch) | |
| tree | d14818d1f81743b8849f84aa8c2fc4f01fa13e20 /libbb/platform.c | |
| parent | de5edadee2dca2896492f97ab3a56e389305e74d (diff) | |
| download | busybox-cee59053dcf47b4a3ab87f7654c1ed20620def16.tar.gz | |
Bionic lacks ttyname_r; provide a workaround
Signed-off-by: Matt Whitlock <busybox@mattwhitlock.name>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/platform.c')
| -rw-r--r-- | libbb/platform.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libbb/platform.c b/libbb/platform.c index 8d90ca4e9..03bbb798b 100644 --- a/libbb/platform.c +++ b/libbb/platform.c @@ -194,3 +194,22 @@ ssize_t FAST_FUNC getline(char **lineptr, size_t *n, FILE *stream) return len; } #endif + +#ifndef HAVE_TTYNAME_R +int ttyname_r(int fd, char *buf, size_t buflen) +{ + int r; + char path[sizeof("/proc/self/fd/%d") + sizeof(int)*3]; + + if (!isatty(fd)) + return errno == EINVAL ? ENOTTY : errno; + sprintf(path, "/proc/self/fd/%d", fd); + r = readlink(path, buf, buflen); + if (r < 0) + return errno; + if (r >= buflen) + return ERANGE; + buf[r] = '\0'; + return 0; +} +#endif |