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| author | Serapheim Dimitropoulos <serapheim.dimitro@delphix.com> | 2016-09-12 08:15:20 -0700 |
|---|---|---|
| committer | Prakash Surya <prakash.surya@delphix.com> | 2018-05-21 07:35:14 -0700 |
| commit | 5ac95da7d61660aa299c287a39277cb0372be959 (patch) | |
| tree | 7385f79dcaad982f1dd41a1ccb4b4339fbdab282 /usr/src/lib/libzfs | |
| parent | 8dfe5547fbf0979fc1065a8b6fddc1e940a7cf4f (diff) | |
| download | illumos-gate-5ac95da7d61660aa299c287a39277cb0372be959.tar.gz | |
9330 stack overflow when creating a deeply nested dataset
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
Diffstat (limited to 'usr/src/lib/libzfs')
| -rw-r--r-- | usr/src/lib/libzfs/common/libzfs_dataset.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/usr/src/lib/libzfs/common/libzfs_dataset.c b/usr/src/lib/libzfs/common/libzfs_dataset.c index f91b9ecf6a..c48f633355 100644 --- a/usr/src/lib/libzfs/common/libzfs_dataset.c +++ b/usr/src/lib/libzfs/common/libzfs_dataset.c @@ -3409,8 +3409,22 @@ zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) { int prefix; char *path_copy; + char errbuf[1024]; int rc = 0; + (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, + "cannot create '%s'"), path); + + /* + * Check that we are not passing the nesting limit + * before we start creating any ancestors. + */ + if (dataset_nestcheck(path) != 0) { + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "maximum name nesting depth exceeded")); + return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); + } + if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) return (-1); @@ -3446,6 +3460,12 @@ zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, if (!zfs_validate_name(hdl, path, type, B_TRUE)) return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); + if (dataset_nestcheck(path) != 0) { + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "maximum name nesting depth exceeded")); + return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); + } + /* validate parents exist */ if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) return (-1); @@ -4233,6 +4253,7 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, errbuf)); } } + if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); } else { |