static int open_file(void)
{
const char *filename;
const char *modestr;
struct stat sb;
int fd;
int ret;
int tries = 0;
int fcntl_flags;
int flags, randflags;
bool opened_with_fopen = FALSE;
retry:
filename = get_filename();
ret = lstat(filename, &sb);
if (ret == -1)
goto retry;
flags = check_stat_file(&sb);
if (flags == -1)
goto retry;
/* OR in some random flags. */
retry_flags:
if (rand_bool()) {
randflags = get_o_flags();
fd = open(filename, flags | randflags | O_NONBLOCK);
} else {
fd = open_with_fopen(filename, flags);
fcntl_flags = random_fcntl_setfl_flags();
fcntl(fd, F_SETFL, fcntl_flags);
opened_with_fopen = TRUE;
}
if (fd < 0) {
/*
* if we failed to open the file, retry with different flags.
* we should eventually succeed, but set an arbitary upper limit of
* 50 tries before just giving up.
*/
tries++;
if (tries == 50) {
output(2, "Couldn't open %s : %s\n", filename, strerror(errno));
return fd;
}
goto retry_flags;
}
switch (flags) {
case O_RDONLY: modestr = "read-only"; break;
case O_WRONLY: modestr = "write-only"; break;
case O_RDWR: modestr = "read-write"; break;
default: modestr = "unknown"; break;
}
if (opened_with_fopen == FALSE) {
output(2, "fd[%i] = open %s (%s) flags:%x\n", fd, filename, modestr, flags | randflags);
if (victim_dev!=NULL) victim_fd=0;
}
else
{
output(2, "fd[%i] = fopen %s (%s) flags:%x fcntl_flags:%x\n",
fd, filename, modestr, flags, fcntl_flags);
//try to keep track of the victim fd in case victim_dev was specified
//and taking it valid only if the fd is read/write or write
if (victim_dev!=NULL && (flags==O_WRONLY||flags==O_RDWR)) victim_fd=fd;
else victim_fd=0;
}
return fd;
}
static int open_file(void)
{
const char *filename;
const char *modestr;
struct stat sb;
int fd;
int ret;
int tries = 0;
int fcntl_flags = 0;
int flags, randflags = 0;
bool opened_with_fopen = FALSE;
retry:
filename = get_filename();
ret = lstat(filename, &sb);
if (ret == -1)
goto retry;
flags = check_stat_file(&sb);
if (flags == -1)
goto retry;
/* OR in some random flags. */
retry_flags:
if (RAND_BOOL()) {
randflags = get_o_flags();
fd = open(filename, flags | randflags | O_NONBLOCK, 0666);
} else {
fd = open_with_fopen(filename, flags);
fcntl_flags = random_fcntl_setfl_flags();
fcntl(fd, F_SETFL, fcntl_flags);
opened_with_fopen = TRUE;
}
if (fd < 0) {
/*
* if we failed to open the file, retry with different flags.
* we should eventually succeed, but set an arbitary upper limit of
* 50 tries before just giving up.
*/
tries++;
if (tries == 50) {
output(2, "Couldn't open %s : %s\n", filename, strerror(errno));
return fd;
}
goto retry_flags;
}
switch (flags) {
case O_RDONLY: modestr = "read-only"; break;
case O_WRONLY: modestr = "write-only"; break;
case O_RDWR: modestr = "read-write"; break;
default: modestr = "unknown"; break;
}
if (opened_with_fopen == FALSE)
output(2, "fd[%i] = open %s (%s) flags:%x\n", fd, filename, modestr, flags | randflags);
else
output(2, "fd[%i] = fopen %s (%s) flags:%x fcntl_flags:%x\n",
fd, filename, modestr, flags, fcntl_flags);
return fd;
}
