From cee59053dcf47b4a3ab87f7654c1ed20620def16 Mon Sep 17 00:00:00 2001 From: Matt Whitlock Date: Sat, 25 Apr 2015 21:32:48 +0200 Subject: Bionic lacks ttyname_r; provide a workaround Signed-off-by: Matt Whitlock Signed-off-by: Denys Vlasenko --- libbb/platform.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'libbb/platform.c') 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 -- cgit v1.2.3