stv0g/eyefi-config
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start to add support to create eyefi files

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When a card is new or newly-formatted, it does not have the
control directory.  This code starts to let us find where a
card is, even if that directory is not there.
This commit is contained in:
Dave Hansen 2011-08-07 11:44:37 -07:00
parent c7d01cc896
commit d6c51b2051
1 changed files with 50 additions and 0 deletions
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50
eyefi-linux.c
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@ -65,6 +65,53 @@ int fd_flush(int fd)
return ret;
}
// Ubuntu (at least) also uses this as a UUID, although it
// is not very unique among Eye-Fi cards, obviously.
#define EYEFI_VOLUME_ID "AA52-6922";
static char UDEV_BY_UUID_PATH[PATHNAME_MAX] = "/dev/disk/by-uuid/" EYEFI_VOLUME_ID;
// Note: this modifies the original string
char *basename(char *filename)
{
char *place = filename + strlen(filename) - 1;
// strip trailing slashes like the basename command
while (*place == '/') {
*place = '\0';
place--;
}
while (place >= filename) {
if (*place == '/')
return place+1;
place--;
}
return filename;
}
// This is a little backards. To see if this is an Eye-Fi card,
// we look at a known place where we expect udev to put a symlink
// to the device file: UDEV_BY_UUID_PATH. We then see whether
// that symlink matches the /dev/$foo from /proc/mounts
int dev_has_eyefi_vol_id(char *dev)
{
char link_contents[PATHNAME_MAX];
char *link_dev_name;
ssize_t ret;
ret = readlink(UDEV_BY_UUID_PATH, &link_contents[0], PATHNAME_MAX);
debug_printf(1, "read %ld bytes of link data from '%s': '%s'\n",
ret, UDEV_BY_UUID_PATH, link_contents);
if (ret < 0)
return ret;
link_dev_name = basename(&link_contents[0]);
dev = basename(dev);
debug_printf(1, "basename('%s'): '%s'\n", link_contents, link_dev_name);
if (strcmp(dev, link_dev_name))
return -ENOENT;
return 0;
}
int fs_is(char *fs, char *fs_name)
{
return (strcmp(fs, fs_name) == 0);
@ -98,6 +145,9 @@ static char *check_mount_line(int line_nr, char *line)
int statret;
statret = stat(file, &statbuf);
free(file);
//if (statret == -ENODEV) {
// dev_has_eyefi_vol_id(&dev[0]);
//}
if (statret) {
debug_printf(3, "fs[%d] at: %s is not an Eye-Fi card, skipping...\n",
line_nr, &mnt[0]);