diff options
Diffstat (limited to 'src/basic/fd-util.c')
| -rw-r--r-- | src/basic/fd-util.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c index e54c104597..d1b1db3a4d 100644 --- a/src/basic/fd-util.c +++ b/src/basic/fd-util.c @@ -19,7 +19,10 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ +#include "dirent-util.h" #include "fd-util.h" +#include "parse-util.h" +#include "socket-util.h" #include "util.h" int close_nointr(int fd) { @@ -319,3 +322,30 @@ void cmsg_close_all(struct msghdr *mh) { if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) close_many((int*) CMSG_DATA(cmsg), (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int)); } + +bool fdname_is_valid(const char *s) { + const char *p; + + /* Validates a name for $LISTEN_FDNAMES. We basically allow + * everything ASCII that's not a control character. Also, as + * special exception the ":" character is not allowed, as we + * use that as field separator in $LISTEN_FDNAMES. + * + * Note that the empty string is explicitly allowed + * here. However, we limit the length of the names to 255 + * characters. */ + + if (!s) + return false; + + for (p = s; *p; p++) { + if (*p < ' ') + return false; + if (*p >= 127) + return false; + if (*p == ':') + return false; + } + + return p - s < 256; +} |