Blame SOURCES/autofs-5.1.7-pass-root-length-to-mount_fullpath.patch

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autofs-5.1.7 - pass root length to mount_fullpath()
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From: Ian Kent <raven@themaw.net>
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The length of root may already be known, add a parameter to allow
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passing it to mount_fullpath() so a strlen() call can be avoided.
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Signed-off-by: Ian Kent <raven@themaw.net>
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---
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 CHANGELOG               |    1 +
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 include/mounts.h        |    2 +-
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 lib/mounts.c            |   11 +++++++----
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 modules/mount_bind.c    |    2 +-
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 modules/mount_changer.c |    2 +-
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 modules/mount_ext2.c    |    2 +-
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 modules/mount_generic.c |    2 +-
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 modules/mount_nfs.c     |    2 +-
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 modules/parse_sun.c     |    4 ++--
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 9 files changed, 16 insertions(+), 12 deletions(-)
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diff --git a/CHANGELOG b/CHANGELOG
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index 8494f0dc..1c9e2a2d 100644
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -44,6 +44,7 @@
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 - remove obsolete functions.
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 - remove redundant local var from sun_mount().
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 - use mount_fullpath() in one spot in parse_mount().
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+- pass root length to mount_fullpath().
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 25/01/2021 autofs-5.1.7
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 - make bind mounts propagation slave by default.
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diff --git a/include/mounts.h b/include/mounts.h
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index ec895e1c..d7980976 100644
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--- a/include/mounts.h
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+++ b/include/mounts.h
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@@ -131,7 +131,7 @@ int check_nfs_mount_version(struct nfs_mount_vers *, struct nfs_mount_vers *);
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 extern unsigned int nfs_mount_uses_string_options;
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 int mount_fullpath(char *fullpath, size_t max_len,
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-		   const char *root, const char *name);
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+		   const char *root, size_t root_len, const char *name);
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 struct amd_entry;
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diff --git a/lib/mounts.c b/lib/mounts.c
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index c120d2a8..6b8e4c92 100644
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--- a/lib/mounts.c
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+++ b/lib/mounts.c
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@@ -362,11 +362,14 @@ int check_nfs_mount_version(struct nfs_mount_vers *vers,
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 #endif
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 int mount_fullpath(char *fullpath, size_t max_len,
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-		   const char *root, const char *name)
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+		   const char *root, size_t root_len, const char *name)
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 {
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 	int last, len;
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-	last = strlen(root) - 1;
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+	if (root_len)
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+		last = root_len - 1;
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+	else
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+		last = strlen(root) - 1;
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 	/* Root offset of multi-mount or direct or offset mount.
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 	 * Direct or offset mount, name (or root) is absolute path.
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@@ -1685,7 +1688,7 @@ void tree_mapent_cleanup_offsets(struct mapent *oe)
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 	else {
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 		char mp[PATH_MAX + 1];
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-		if (!mount_fullpath(mp, PATH_MAX, ap->path, oe->key))
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+		if (!mount_fullpath(mp, PATH_MAX, ap->path, ap->len, oe->key))
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 			error(ap->logopt, "mount path is too long");
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 		else
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 			tree_mapent_umount_mount(ap, mp);
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@@ -1922,7 +1925,7 @@ int tree_mapent_umount_offsets(struct mapent *oe, int nonstrict)
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 		 * one of these keys is the root of a multi-mount the mount
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 		 * path must be constructed.
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 		 */
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-		if (!mount_fullpath(mp, PATH_MAX, ap->path, oe->key)) {
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+		if (!mount_fullpath(mp, PATH_MAX, ap->path, ap->len, oe->key)) {
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 			error(ap->logopt, "mount path is too long");
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 			return 0;
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 		}
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diff --git a/modules/mount_bind.c b/modules/mount_bind.c
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index c17c6f18..7f64332b 100644
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--- a/modules/mount_bind.c
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+++ b/modules/mount_bind.c
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@@ -122,7 +122,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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 		}
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 	}
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-	len = mount_fullpath(fullpath, PATH_MAX, root, name);
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+	len = mount_fullpath(fullpath, PATH_MAX, root, 0, name);
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 	if (!len) {
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 		error(ap->logopt,
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 		      MODPREFIX "mount point path too long");
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diff --git a/modules/mount_changer.c b/modules/mount_changer.c
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index d02b5f45..8adb9f9a 100644
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--- a/modules/mount_changer.c
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+++ b/modules/mount_changer.c
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@@ -59,7 +59,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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 	fstype = "iso9660";
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-	len = mount_fullpath(fullpath, PATH_MAX, root, name);
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+	len = mount_fullpath(fullpath, PATH_MAX, root, 0, name);
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 	if (!len) {
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 		error(ap->logopt,
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 		      MODPREFIX "mount point path too long");
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diff --git a/modules/mount_ext2.c b/modules/mount_ext2.c
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index 53e6ee10..f4002e58 100644
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--- a/modules/mount_ext2.c
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+++ b/modules/mount_ext2.c
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@@ -55,7 +55,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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 	if (defaults_get_mount_verbose())
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 		mountlog = &log_info;
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-	len = mount_fullpath(fullpath, PATH_MAX, root, name);
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+	len = mount_fullpath(fullpath, PATH_MAX, root, 0, name);
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 	if (!len) {
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 		error(ap->logopt,
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 		      MODPREFIX "mount point path too long");
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diff --git a/modules/mount_generic.c b/modules/mount_generic.c
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index c9deb7ae..8cd0f4ab 100644
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--- a/modules/mount_generic.c
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+++ b/modules/mount_generic.c
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@@ -54,7 +54,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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 	if (defaults_get_mount_verbose())
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 		mountlog = &log_info;
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-	len = mount_fullpath(fullpath, PATH_MAX, root, name);
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+	len = mount_fullpath(fullpath, PATH_MAX, root, 0, name);
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 	if (!len) {
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 		error(ap->logopt,
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 		      MODPREFIX "mount point path too long");
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diff --git a/modules/mount_nfs.c b/modules/mount_nfs.c
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index c70210f4..0314a78f 100644
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--- a/modules/mount_nfs.c
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+++ b/modules/mount_nfs.c
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@@ -213,7 +213,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
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 	}
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 	/* Construct mount point directory */
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-	len = mount_fullpath(fullpath, PATH_MAX, root, name);
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+	len = mount_fullpath(fullpath, PATH_MAX, root, 0, name);
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 	if (!len) {
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 		error(ap->logopt,
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 		      MODPREFIX "mount point path too long");
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diff --git a/modules/parse_sun.c b/modules/parse_sun.c
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index d3fc6c7f..b1c2611c 100644
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--- a/modules/parse_sun.c
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+++ b/modules/parse_sun.c
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@@ -1089,7 +1089,7 @@ static int mount_subtree(struct autofs_point *ap, struct mapent_cache *mc,
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 		struct mapent *ro;
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 		size_t len;
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-		len = mount_fullpath(key, PATH_MAX, ap->path, me->key);
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+		len = mount_fullpath(key, PATH_MAX, ap->path, ap->len, me->key);
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 		if (!len) {
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 			warn(ap->logopt, "path loo long");
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 			return 1;
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@@ -1359,7 +1359,7 @@ dont_expand:
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 		time_t age;
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 		int l;
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-		m_root_len = mount_fullpath(m_root, PATH_MAX, ap->path, name);
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+		m_root_len = mount_fullpath(m_root, PATH_MAX, ap->path, ap->len, name);
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 		if (!m_root_len) {
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 			error(ap->logopt,
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 			      MODPREFIX "multi-mount root path too long");