diff options
Diffstat (limited to 'sys-utils/swapon-common.c')
| -rw-r--r-- | sys-utils/swapon-common.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sys-utils/swapon-common.c b/sys-utils/swapon-common.c index 6dd7bacb1..203d5c4d0 100644 --- a/sys-utils/swapon-common.c +++ b/sys-utils/swapon-common.c @@ -1,6 +1,8 @@ +#include <blkid.h> #include "c.h" #include "nls.h" +#include "swapheader.h" #include "swapon-common.h" #include "xalloc.h" @@ -104,3 +106,45 @@ size_t numof_uuids(void) return ulct; } +blkid_probe get_swap_prober(const char *devname) +{ + blkid_probe pr; + int rc; + const char *version = NULL; + char *swap_filter[] = { "swap", NULL }; + + pr = blkid_new_probe_from_filename(devname); + if (!pr) { + warn(_("%s: unable to probe device"), devname); + return NULL; + } + + blkid_probe_enable_superblocks(pr, TRUE); + blkid_probe_set_superblocks_flags(pr, + BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID | + BLKID_SUBLKS_VERSION); + + blkid_probe_filter_superblocks_type(pr, BLKID_FLTR_ONLYIN, swap_filter); + + rc = blkid_do_safeprobe(pr); + if (rc == -1) + warn(_("%s: unable to probe device"), devname); + else if (rc == -2) + warnx(_("%s: ambivalent probing result, use wipefs(8)"), devname); + else if (rc == 1) + warnx(_("%s: not a valid swap partition"), devname); + + if (rc == 0) { + /* Only the SWAPSPACE2 is supported. */ + if (blkid_probe_lookup_value(pr, "VERSION", &version, NULL) == 0 + && version + && strcmp(version, stringify_value(SWAP_VERSION))) + warnx(_("%s: unsupported swap version '%s'"), + devname, version); + else + return pr; + } + + blkid_free_probe(pr); + return NULL; +} |