diff options
Diffstat (limited to 'usr/src')
| -rw-r--r-- | usr/src/uts/common/fs/dev/sdev_zvolops.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/usr/src/uts/common/fs/dev/sdev_zvolops.c b/usr/src/uts/common/fs/dev/sdev_zvolops.c index 85d9ab64cb..3fa98b3124 100644 --- a/usr/src/uts/common/fs/dev/sdev_zvolops.c +++ b/usr/src/uts/common/fs/dev/sdev_zvolops.c @@ -197,8 +197,13 @@ devzvol_objset_check(char *dsname, dmu_objset_type_t *type) } /* - * returns what the zfs dataset name should be, given the /dev/zvol - * path and an optional name; otherwise NULL + * Returns what the zfs dataset name should be, given the /dev/zvol + * path and an optional name (can be NULL). + * + * Note that if the name param is NULL, then path must be an + * actual dataset's directory and not one of the top-level + * /dev/zvol/{dsk,rdsk} dirs, as these do not correspond to a + * specific dataset. */ char * devzvol_make_dsname(const char *path, const char *name) @@ -218,8 +223,11 @@ devzvol_make_dsname(const char *path, const char *name) ptr += strlen("/rdsk"); else return (NULL); + if (*ptr == '/') ptr++; + else if (name == NULL) + return (NULL); dslen = strlen(ptr); if (dslen) |