diff options
| author | NeilBrown <neilb@suse.de> | 2010-11-22 10:58:06 +0100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-11-22 10:58:06 +0100 |
| commit | 3a3716107b614f679a4ea224e5bb882739d81cf9 (patch) | |
| tree | 7874c3cc38822e3ca4e3af9909d3c7278d73ae63 /util.c | |
| parent | Assemble: turn next_member goto loop into a for loop. (diff) | |
| download | mdadm-3a3716107b614f679a4ea224e5bb882739d81cf9.tar.xz mdadm-3a3716107b614f679a4ea224e5bb882739d81cf9.zip | |
Add must_be_container helper.
This checks a block device to see if it could be a container, and
in particular cannot be a member device.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -1189,6 +1189,20 @@ int get_dev_size(int fd, char *dname, unsigned long long *sizep) return 1; } +/* Return true if this can only be a container, not a member device. + * i.e. is and md device and size is zero + */ +int must_be_container(int fd) +{ + unsigned long long size; + if (md_get_version(fd) < 0) + return 0; + if (get_dev_size(fd, NULL, &size) == 0) + return 1; + if (size == 0) + return 1; + return 0; +} /* Sets endofpart parameter to the last block used by the last GPT partition on the device. * Returns: 1 if successful |