libzfs: constify zfs_strip_partition(), zfs_strip_path()

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13413

include/libzutil.h

@@ -97,8 +97,8 @@ _LIBZUTIL_H int zfs_append_partition(char *path, size_t max_len);
 _LIBZUTIL_H int zfs_resolve_shortname(const char *name, char *path,
     size_t pathlen);
 
-_LIBZUTIL_H char *zfs_strip_partition(char *);
+_LIBZUTIL_H char *zfs_strip_partition(const char *);
-_LIBZUTIL_H char *zfs_strip_path(char *);
+_LIBZUTIL_H const char *zfs_strip_path(const char *);
 
 _LIBZUTIL_H int zfs_strcmp_pathname(const char *, const char *, int);
 

lib/libzfs/libzfs.abi

@@ -5588,12 +5588,12 @@
       <return type-id='95e97e5e'/>
     </function-decl>
     <function-decl name='zfs_strip_partition' mangled-name='zfs_strip_partition' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_strip_partition'>
-      <parameter type-id='26a90f95' name='path'/>
+      <parameter type-id='80f4b756' name='path'/>
       <return type-id='26a90f95'/>
     </function-decl>
     <function-decl name='zfs_strip_path' mangled-name='zfs_strip_path' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_strip_path'>
-      <parameter type-id='26a90f95' name='path'/>
+      <parameter type-id='80f4b756' name='path'/>
-      <return type-id='26a90f95'/>
+      <return type-id='80f4b756'/>
     </function-decl>
     <function-decl name='zfs_get_enclosure_sysfs_path' mangled-name='zfs_get_enclosure_sysfs_path' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_get_enclosure_sysfs_path'>
       <parameter type-id='80f4b756' name='dev_name'/>

lib/libzfs/libzfs_pool.c

@@ -4123,7 +4123,8 @@ char *
 zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
     int name_flags)
 {
-	char *path, *type;
+	char *type, *tpath;
+	const char *path;
 	uint64_t value;
 	char buf[PATH_BUF_LEN];
 	char tmpbuf[PATH_BUF_LEN * 2];
@@ -4148,7 +4149,9 @@ zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
 		(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value);
 		(void) snprintf(buf, sizeof (buf), "%llu", (u_longlong_t)value);
 		path = buf;
-	} else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
+	} else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &tpath) == 0) {
+		path = tpath;
+
 		if (name_flags & VDEV_NAME_FOLLOW_LINKS) {
 			char *rp = realpath(path, NULL);
 			if (rp) {

lib/libzutil/os/freebsd/zutil_device_path_os.c

@@ -40,7 +40,7 @@
  * Note: The caller must free the returned string.
  */
 char *
-zfs_strip_partition(char *dev)
+zfs_strip_partition(const char *dev)
 {
 	return (strdup(dev));
 }
@@ -56,8 +56,8 @@ zfs_append_partition(char *path, size_t max_len)
  * On FreeBSD we only want to remove "/dev/" from the beginning of
  * paths if present.
  */
-char *
+const char *
-zfs_strip_path(char *path)
+zfs_strip_path(const char *path)
 {
 	if (strncmp(path, _PATH_DEV, sizeof (_PATH_DEV) - 1) == 0)
 		return (path + sizeof (_PATH_DEV) - 1);

lib/libzutil/os/linux/zutil_device_path_os.c

@@ -81,7 +81,7 @@ zfs_append_partition(char *path, size_t max_len)
  * caller must free the returned string
  */
 char *
-zfs_strip_partition(char *path)
+zfs_strip_partition(const char *path)
 {
 	char *tmp = strdup(path);
 	char *part = NULL, *d = NULL;
@@ -117,7 +117,7 @@ zfs_strip_partition(char *path)
  * Returned string must be freed.
  */
 static char *
-zfs_strip_partition_path(char *path)
+zfs_strip_partition_path(const char *path)
 {
 	char *newpath = strdup(path);
 	char *sd_offset;
@@ -148,8 +148,8 @@ zfs_strip_partition_path(char *path)
 /*
  * Strip the unwanted portion of a device path.
  */
-char *
+const char *
-zfs_strip_path(char *path)
+zfs_strip_path(const char *path)
 {
 	return (strrchr(path, '/') + 1);
 }