---
libbb/missing_syscalls.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/libbb/missing_syscalls.c b/libbb/missing_syscalls.c
index dd430e3..e57c2de 100644
--- a/libbb/missing_syscalls.c
+++ b/libbb/missing_syscalls.c
@@ -39,4 +39,18 @@ int pivot_root(const char *new_root, const char *put_old)
{
return syscall(__NR_pivot_root, new_root, put_old);
}
+
+int ttyname_r(int fd, char *buf, size_t buflen) {
+ int r;
+ char path[32];
+ if (!isatty(fd))
+ return errno == EINVAL ? ENOTTY : errno;
+ sprintf(path, "/proc/self/fd/%d", fd);
+ if ((r = readlink(path, buf, buflen)) < 0)
+ return errno;
+ if (r >= buflen)
+ return ERANGE;
+ buf[r] = '\0';
+ return 0;
+}
#endif
--
2.0.5
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