dns response handling: ignore presence of wrong-type RRs
[musl] / src / thread / pthread_setname_np.c
1 #define _GNU_SOURCE
2 #include <fcntl.h>
3 #include <string.h>
4 #include <unistd.h>
5 #include <sys/prctl.h>
6
7 #include "pthread_impl.h"
8
9 int pthread_setname_np(pthread_t thread, const char *name)
10 {
11         int fd, cs, status = 0;
12         char f[sizeof "/proc/self/task//comm" + 3*sizeof(int)];
13         size_t len;
14
15         if ((len = strnlen(name, 16)) > 15) return ERANGE;
16
17         if (thread == pthread_self())
18                 return prctl(PR_SET_NAME, (unsigned long)name, 0UL, 0UL, 0UL) ? errno : 0;
19
20         snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid);
21         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
22         if ((fd = open(f, O_WRONLY|O_CLOEXEC)) < 0 || write(fd, name, len) < 0) status = errno;
23         if (fd >= 0) close(fd);
24         pthread_setcancelstate(cs, 0);
25         return status;
26 }