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libblkid: add superblocks filter functions 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2009-09-15 21:45:15 +02:00
parent 8287d790f1
commit b7f9a38d7d
1 changed files with 117 additions and 0 deletions
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117
shlibs/blkid/src/superblocks/superblocks.c
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@ -149,6 +149,123 @@ const struct blkid_chaindrv superblocks_drv = {
};
/**
* blkid_probe_enable_superblocks:
* @pr: probe
* @enable: TRUE/FALSE
*
* Enables/disables the superblocks probing for non-binary interface.
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_enable_superblocks(blkid_probe pr, int enable)
{
if (!pr)
return -1;
pr->chains[BLKID_CHAIN_SUBLKS].enabled = enable;
return 0;
}
/**
* blkid_probe_set_superblocks_flags:
* @pr: prober
* @flags: BLKID_SUBLKS_* flags
*
* Sets probing flags to the superblocks prober. This function is optional, the
* default are BLKID_SUBLKS_DEFAULTS flags.
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_set_superblocks_flags(blkid_probe pr, int flags)
{
if (!pr)
return -1;
pr->chains[BLKID_CHAIN_SUBLKS].flags = flags;
return 0;
}
/**
* blkid_probe_reset_superblocks_filter:
* @pr: prober
*
* Resets superblocks probing filter
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_reset_superblocks_filter(blkid_probe pr)
{
return __blkid_probe_reset_filter(pr, BLKID_CHAIN_SUBLKS);
}
/**
* blkid_probe_invert_superblocks_filter:
* @pr: prober
*
* Inverts superblocks probing filter
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_invert_superblocks_filter(blkid_probe pr)
{
return __blkid_probe_invert_filter(pr, BLKID_CHAIN_SUBLKS);
}
/**
* blkid_probe_filter_superblocks_type:
* @pr: prober
* @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag
* @names: NULL terminated array of probing function names (e.g. "vfat").
*
* BLKID_FLTR_NOTIN - probe for all items which are NOT IN @names
* BLKID_FLTR_ONLYIN - probe for items which are IN @names
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_filter_superblocks_type(blkid_probe pr, int flag, char *names[])
{
return __blkid_probe_filter_types(pr, BLKID_CHAIN_SUBLKS, flag, names);
}
/**
* blkid_probe_filter_superblocks_usage:
* @pr: prober
* @flag: filter BLKID_FLTR_{NOTIN,ONLYIN} flag
* @usage: BLKID_USAGE_* flags
*
* BLKID_FLTR_NOTIN - probe for all items which are NOT IN @usage
* BLKID_FLTR_ONLYIN - probe for items which are IN @usage
*
* Returns: 0 on success, or -1 in case of error.
*/
int blkid_probe_filter_superblocks_usage(blkid_probe pr, int flag, int usage)
{
unsigned long *fltr;
struct blkid_chain *chn;
int i;
if (!pr)
return -1;
fltr = blkid_probe_get_filter(pr, BLKID_CHAIN_SUBLKS, TRUE);
if (!fltr)
return -1;
chn = &pr->chains[BLKID_CHAIN_SUBLKS];
for (i = 0; i < chn->driver->nidinfos; i++) {
const struct blkid_idinfo *id = chn->driver->idinfos[i];
if (id->usage & usage) {
if (flag & BLKID_FLTR_NOTIN)
blkid_bmp_set_item(chn->fltr, i);
} else if (flag & BLKID_FLTR_ONLYIN)
blkid_bmp_set_item(chn->fltr, i);
}
DBG(DEBUG_LOWPROBE, printf("a new probing usage-filter initialized\n"));
return 0;
}
/**
* blkid_known_fstype:
* @fstype: filesystem name