Linux – Get label of Linux storage partition device file

You may run your backup script like that in your cron

fgrep -q /mnt/backup /proc/mounts && backup.sh

But better add the test in your script, to log the failed attempts

You can follow these steps to do it:

1. get devname using blkid_dev_devname(...)
2. get prob for this partition using blkid_new_probe_from_filename(...)
3. use setmntent(...), getmntent(...), & endmntent(...), where mnt->mnt_fsname equals to devname copy mnt->mnt_dir which is mount point!

See these references for further details

• http://linux.die.net/man/3/getmntent
• https://www.kernel.org/pub/linux/utils/util-linux/v2.21/libblkid-docs/api-index-full.html

mntent data structure

struct mntent {    
    char *mnt_fsname;   /* name of mounted file system */    
    char *mnt_dir;      /* file system path prefix */      
    ...
};