[PATCH 2/3] blspec: iterate over entries in lexical order

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

We already iterate over boot scripts in lexical order, so it makes sense
to do the same for bootspec entries. This way, it's stable which boot
entry will be taken, when multiple match.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 common/blspec.c | 43 ++++++++++---------------------------------
 1 file changed, 10 insertions(+), 33 deletions(-)

diff --git a/common/blspec.c b/common/blspec.c
index d798f6f38a4b..cbaa211cb16f 100644
--- a/common/blspec.c
+++ b/common/blspec.c
@@ -15,6 +15,7 @@
 #include <libbb.h>
 #include <init.h>
 #include <bootm.h>
+#include <glob.h>
 #include <net.h>
 #include <fs.h>
 #include <of.h>
@@ -570,54 +571,30 @@ int blspec_scan_file(struct bootentries *bootentries, const char *root,
  */
 int blspec_scan_directory(struct bootentries *bootentries, const char *root)
 {
-	DIR *dir;
-	struct dirent *d;
+	glob_t globb;
 	char *abspath;
 	int ret, found = 0;
 	const char *dirname = "loader/entries";
+	int i;
 
 	pr_debug("%s: %s %s\n", __func__, root, dirname);
 
-	abspath = basprintf("%s/%s", root, dirname);
+	abspath = basprintf("%s/%s/*.conf", root, dirname);
 
-	dir = opendir(abspath);
-	if (!dir) {
+	ret = glob(abspath, 0, NULL, &globb);
+	if (ret) {
 		pr_debug("%s: %s: %s\n", __func__, abspath, strerror(errno));
 		ret = -errno;
 		goto err_out;
 	}
 
-	while ((d = readdir(dir))) {
-		char *configname;
+	for (i = 0; i < globb.gl_pathc; i++) {
+		const char *configname = globb.gl_pathv[i];
 		struct stat s;
-		char *dot;
-
-		if (*d->d_name == '.')
-			continue;
-
-		configname = basprintf("%s/%s", abspath, d->d_name);
-
-		dot = strrchr(configname, '.');
-		if (!dot) {
-			free(configname);
-			continue;
-		}
-
-		if (strcmp(dot, ".conf")) {
-			free(configname);
-			continue;
-		}
 
 		ret = stat(configname, &s);
-		if (ret) {
-			free(configname);
+		if (ret || !S_ISREG(s.st_mode))
 			continue;
-		}
-
-		if (!S_ISREG(s.st_mode)) {
-			free(configname);
-			continue;
-		}
 
 		ret = blspec_scan_file(bootentries, root, configname);
 		if (ret == 1)
@@ -626,7 +603,7 @@ int blspec_scan_directory(struct bootentries *bootentries, const char *root)
 
 	ret = found;
 
-	closedir(dir);
+	globfree(&globb);
 err_out:
 	free(abspath);
 
-- 
2.30.2