Blame SOURCES/autofs-5.1.7-add-a-len-field-to-struct-autofs_point.patch

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autofs-5.1.7 - add a len field to struct autofs_point
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From: Ian Kent <raven@themaw.net>
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Add a path length field to struct autofs_point since the path length
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is needed at various times avoiding additional strlen() calls.
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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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 daemon/lookup.c     |    2 +-
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 daemon/master.c     |    1 +
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 include/automount.h |    1 +
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 lib/mounts.c        |    6 +++---
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 modules/parse_amd.c |    4 ++--
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 modules/parse_sun.c |    4 ++--
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 7 files changed, 11 insertions(+), 8 deletions(-)
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diff --git a/CHANGELOG b/CHANGELOG
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index 60924b3f..0dae6761 100644
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -30,6 +30,7 @@
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 - rename tree implementation functions.
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 - add some multi-mount macros.
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 - remove unused functions cache_dump_multi() and cache_dump_cache().
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+- add a len field to struct autofs_point.
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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/daemon/lookup.c b/daemon/lookup.c
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index 8c9a82b5..5116b927 100644
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--- a/daemon/lookup.c
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+++ b/daemon/lookup.c
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@@ -843,7 +843,7 @@ static int lookup_amd_instance(struct autofs_point *ap,
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 		return NSS_STATUS_UNKNOWN;
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 	}
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-	m_key = malloc(strlen(ap->path) + strlen(MM_ROOT(me)->key) + 2);
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+	m_key = malloc(ap->len + strlen(MM_ROOT(me)->key) + 2);
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 	if (!m_key) {
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 		error(ap->logopt,
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 		     "failed to allocate storage for search key");
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diff --git a/daemon/master.c b/daemon/master.c
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index da527a61..022fb9dd 100644
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--- a/daemon/master.c
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+++ b/daemon/master.c
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@@ -86,6 +86,7 @@ int master_add_autofs_point(struct master_mapent *entry, unsigned logopt,
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 		free(ap);
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 		return 0;
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 	}
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+	ap->len = strlen(ap->path);
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 	ap->pref = NULL;
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 	ap->entry = entry;
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diff --git a/include/automount.h b/include/automount.h
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index e917515b..34485859 100644
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--- a/include/automount.h
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+++ b/include/automount.h
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@@ -548,6 +548,7 @@ struct kernel_mod_version {
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 struct autofs_point {
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 	pthread_t thid;
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 	char *path;			/* Mount point name */
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+	size_t len;			/* Length of mount point name */
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 	mode_t mode;			/* Mount point mode */
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 	char *pref;			/* amd prefix */
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 	int pipefd;			/* File descriptor for pipe */
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diff --git a/lib/mounts.c b/lib/mounts.c
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index f6f20fc0..b478ecb4 100644
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--- a/lib/mounts.c
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+++ b/lib/mounts.c
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@@ -1158,7 +1158,7 @@ struct mnt_list *mnts_add_mount(struct autofs_point *ap,
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 		if (!mp)
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 			goto fail;
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 	} else {
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-		int len = strlen(ap->path) + strlen(name) + 2;
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+		int len = ap->len + strlen(name) + 2;
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 		mp = malloc(len);
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 		if (!mp)
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@@ -2495,9 +2495,9 @@ static int rmdir_path_offset(struct autofs_point *ap, struct mapent *oe)
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 	dir = strdup(oe->key);
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 	if (ap->flags & MOUNT_FLAG_GHOST)
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-		split = strlen(ap->path) + strlen(MM_ROOT(oe)->key) + 1;
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+		split = ap->len + strlen(MM_ROOT(oe)->key) + 1;
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 	else
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-		split = strlen(ap->path);
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+		split = ap->len;
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 	dir[split] = '\0';
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 	path = &dir[split + 1];
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diff --git a/modules/parse_amd.c b/modules/parse_amd.c
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index d3e8a450..5a9079d6 100644
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--- a/modules/parse_amd.c
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+++ b/modules/parse_amd.c
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@@ -147,7 +147,7 @@ static struct substvar *add_lookup_vars(struct autofs_point *ap,
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 	struct mapent *me;
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 	int len;
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-	len = strlen(ap->path) + 1 + key_len + 1;
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+	len = ap->len + 1 + key_len + 1;
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 	if (len > PATH_MAX) {
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 		error(ap->logopt, MODPREFIX
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 		      "error: lookup key is greater than PATH_MAX");
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@@ -1319,7 +1319,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
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 		char *target;
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 		size_t len;
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-		len = strlen(ap->path) + strlen(entry->rhost) + 2;
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+		len = ap->len + strlen(entry->rhost) + 2;
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 		target = malloc(len);
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 		if (!target) {
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 			warn(ap->logopt, MODPREFIX
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diff --git a/modules/parse_sun.c b/modules/parse_sun.c
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index b11c6693..b1f64ca0 100644
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--- a/modules/parse_sun.c
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+++ b/modules/parse_sun.c
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@@ -1154,7 +1154,7 @@ static int mount_subtree(struct autofs_point *ap, struct mapent_cache *mc,
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 		mm_root = mm_key;
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 		start = strlen(mm_key);
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 	} else {
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-		start = strlen(ap->path) + strlen(mm_key) + 1;
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+		start = ap->len + strlen(mm_key) + 1;
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 		mm_root = alloca(start + 3);
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 		strcpy(mm_root, ap->path);
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 		strcat(mm_root, "/");
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@@ -1477,7 +1477,7 @@ dont_expand:
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 			}
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 			strcpy(m_root, name);
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 		} else {
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-			m_root_len = strlen(ap->path) + name_len + 1;
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+			m_root_len = ap->len + name_len + 1;
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 			m_root = alloca(m_root_len + 1);
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 			if (!m_root) {
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 				char *estr = strerror_r(errno, buf, MAX_ERR_BUF);