mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-24 23:36:46 +00:00
bf9710fd5a
This only affects build_android, if nacl-gcc-prep is run then build/`uname -s` will be created.
20 lines
383 B
C
20 lines
383 B
C
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include "open.h"
|
|
|
|
int open_lock(const char *fn)
|
|
{
|
|
#ifdef O_CLOEXEC
|
|
int fd = open(fn,O_RDWR | O_CLOEXEC);
|
|
if (fd == -1) return -1;
|
|
#else
|
|
int fd = open(fn,O_RDWR);
|
|
if (fd == -1) return -1;
|
|
fcntl(fd,F_SETFD,1);
|
|
#endif
|
|
if (lockf(fd,F_LOCK,0) == -1) { close(fd); return -1; }
|
|
return fd;
|
|
}
|