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hashcat/src/locking.c

43 lines
665 B
C

/**
* Author......: Jens Steube <jens.steube@gmail.com>
* License.....: MIT
*/
#include "common.h"
#include "logging.h"
#include "locking.h"
#if defined (F_SETLKW)
void lock_file (FILE *fp)
{
struct flock lock;
memset (&lock, 0, sizeof (struct flock));
lock.l_type = F_WRLCK;
while (fcntl (fileno (fp), F_SETLKW, &lock))
{
if (errno != EINTR)
{
log_error ("ERROR: Failed acquiring write lock: %s", strerror (errno));
exit (-1);
}
}
}
void unlock_file (FILE *fp)
{
struct flock lock;
memset (&lock, 0, sizeof (struct flock));
lock.l_type = F_UNLCK;
fcntl (fileno (fp), F_SETLK, &lock);
}
#endif // F_SETLKW