26 lines
764 B
C
26 lines
764 B
C
#define _GNU_SOURCE
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <sys/prctl.h>
|
|
|
|
#include "pthread_impl.h"
|
|
|
|
int pthread_getname_np(pthread_t thread, char *name, size_t len)
|
|
{
|
|
int fd, cs, status = 0;
|
|
char f[sizeof "/proc/self/task//comm" + 3*sizeof(int)];
|
|
|
|
if (len < 16) return ERANGE;
|
|
|
|
if (thread == pthread_self())
|
|
return prctl(PR_GET_NAME, (unsigned long)name, 0UL, 0UL, 0UL) ? errno : 0;
|
|
|
|
snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid);
|
|
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
|
|
if ((fd = open(f, O_RDONLY|O_CLOEXEC)) < 0 || (len = read(fd, name, len)) == -1) status = errno;
|
|
else name[len-1] = 0; /* remove trailing new line only if successful */
|
|
if (fd >= 0) close(fd);
|
|
pthread_setcancelstate(cs, 0);
|
|
return status;
|
|
}
|