int create_control_files(char *mnt)
{
char *control_dir = eyefi_file_on(RDIR, mnt);
int ret = 0;
enum eyefi_file file;
ret = mkdir(control_dir, 0644);
debug_printf(1, "making control directory: '%s', errno: %d\n", control_dir, errno);
free(control_dir);
if ((ret != 0) && (errno != EEXIST)) {
perror("unable to create Eye-Fi control directory");
return errno;
}
for (file = REQC; file <= RSPM; file++) {
ret = zero_file(file, mnt);
debug_printf(2, "trying to create control file: '%s', ret: %d\n",
eyefi_file_name(file), ret);
if (ret) {
perror("unable to create control file");
goto out;
}
}
out:
return ret;
}
int zero_file(enum eyefi_file file, char *mnt)
{
char *fname;
char *zerobuf[EYEFI_BUF_SIZE];
int fd;
int ret;
memset(&zerobuf[0], 0, EYEFI_BUF_SIZE);
fname = eyefi_file_on(file, mnt);
debug_printf(1, "creating control file: '%s'\n", fname);
fd = open(fname, O_WRONLY|O_CREAT);
ret = fd;
if (ret < 0)
goto out;
ret = write(fd, &zerobuf[0], EYEFI_BUF_SIZE);
if (ret < 0)
goto out;
ret = 0;
fsync(fd);
close(fd);
out:
free(fname);
if (ret)
return errno;
return 0;
}
static char *check_mount_line(int line_nr, char *line)
{
char dev[LINEBUFSZ];
char mnt[LINEBUFSZ];
char fs[LINEBUFSZ];
char opt[LINEBUFSZ];
int garb1;
int garb2;
int read;
read = sscanf(&line[0], "%s %s %s %s %d %d",
&dev[0], &mnt[0], &fs[0], &opt[0],
&garb1, &garb2);
if (read != 6) {
debug_printf(2, "Unable to parse mount line: '%s'\n", line);
return NULL;
}
// only look at fat filesystems:
if (!fs_is(fs, "msdos") && !fs_is(fs, "vfat")) {
debug_printf(4, "fs[%d] at '%s' is not fat, skipping...\n",
line_nr, mnt);
return NULL;
}
// Linux's /proc/mounts has spaces like this \040
replace_escapes(&mnt[0]);
char *file = eyefi_file_on(REQM, &mnt[0]);
struct stat statbuf;
int statret;
statret = stat(file, &statbuf);
free(file);
debug_printf(2, "looking for EyeFi file here: '%s' (statret: %d)\n", file, statret);
if ((statret == -1) && (errno == ENOENT)
&& dev_has_eyefi_vol_id(&dev[0])) {
debug_printf(1, "found mount '%s' that looks like Eye-Fi, "
"but has no control files\n", mnt);
int control_creation = create_control_files(&mnt[0]);
if (control_creation != 0)
return NULL;
statret = stat(file, &statbuf);
}
if (statret) {
debug_printf(3, "fs[%d] at: %s is not an Eye-Fi card, skipping...\n",
line_nr, &mnt[0]);
debug_printf(4, "statret: %d/%d\n", statret, errno);
return NULL;
}
return strdup(&mnt[0]);
}
static char *eyefi_file(enum eyefi_file file)
{
init_card();
return eyefi_file_on(file, locate_eyefi_mount());
}