ubi-tools: fix and cleanup ubirmvol

Plus some more ubimkvol clean-ups

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 102 insertions, 117 deletions

diff --git a/ubi-utils/src/ubirmvol.c b/ubi-utils/src/ubirmvol.c
index 6dd16ba..b6fb8ef 100644
--- a/ubi-utils/src/ubirmvol.c
+++ b/ubi-utils/src/ubirmvol.c
@@ -19,13 +19,8 @@
 /*
  * An utility to remove UBI volumes.
  *
- * Author: Artem B. Bityutskiy <dedekind@linutronix.de>
- *         Frank Haverkamp <haver@vnet.ibm.com>
- *
- * 1.1 Reworked the userinterface to use argp.
- * 1.2 Removed argp because we want to use uClibc.
- * 1.3 Minor cleanups
- * 1.4 Use a different libubi
+ * Authors: Artem B. Bityutskiy <dedekind@infradead.org>
+ *          Frank Haverkamp <haver@vnet.ibm.com>
  */
 
 #include <stdio.h>
@@ -37,119 +32,98 @@
 
 #include <config.h>
 #include <libubi.h>
+#include "common.h"
 
-#define PROGRAM_VERSION "1.4"
+#define PROGRAM_VERSION "1.5"
+#define PROGRAM_NAME    "ubirmvol"
 
-/*
- * The below variables are set by command line options.
- */
+/* The variables below is set by command line arguments */
 struct args {
 	int devn;
 	int vol_id;
-	char node[256];
-
-	/* special stuff needed to get additional arguments */
-	char *arg1;
-	char **options;		/* [STRING...] */
+	char node[MAX_NODE_LEN + 1];
 };
 
 static struct args myargs = {
 	.devn = -1,
 	.vol_id = -1,
-
-	.arg1 = NULL,
-	.options = NULL,
 };
 
 static int param_sanity_check(struct args *args, libubi_t libubi);
 
-static char doc[] = "\nVersion: " PROGRAM_VERSION "\n"
-	"ubirmvol - make UBI Volume.\n";
+static const char *doc = "Version: " PROGRAM_VERSION "\n"
+	PROGRAM_NAME " - a tool to remove UBI volumes.";
 
 static const char *optionsstr =
-"  -d, --devn=<devn>          UBI device\n"
-"  -n, --vol_id=<volume id>   UBI volume id, if not specified, the volume ID\n"
-"                             will be assigned automatically\n"
-"  -?, --help                 Give this help list\n"
-"      --usage                Give a short usage message\n"
-"  -V, --version              Print program version\n";
+"  -n, --vol_id=<volume id>   volume ID to remove\n"
+"  -h, --help                 print help message\n"
+"  -V, --version              print program version";
 
 static const char *usage =
-"Usage: ubirmvol [-?V] [-d <devn>] [-n <volume id>] [--devn=<devn>]\n"
-"            [--vol_id=<volume id>] [--help] [--usage] [--version]\n";
-
-struct option long_options[] = {
-	{ .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
-	{ .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' },
-	{ .name = "help", .has_arg = 0, .flag = NULL, .val = '?' },
-	{ .name = "usage", .has_arg = 0, .flag = NULL, .val = 0 },
+"Usage: " PROGRAM_NAME " <UBI device node file name> [-n <volume id>] [--vol_id=<volume id>] [-h] [--help]\n\n"
+"Example: " PROGRAM_NAME "/dev/ubi0 -n 1 - remove UBI volume 1 from UBI device corresponding\n"
+"         to the node file /dev/ubi0.";
+
+static const struct option long_options[] = {
+	{ .name = "devn",    .has_arg = 1, .flag = NULL, .val = 'd' },
+	{ .name = "vol_id",  .has_arg = 1, .flag = NULL, .val = 'n' },
+	{ .name = "help",    .has_arg = 0, .flag = NULL, .val = 'h' },
 	{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
-	{ NULL, 0, NULL, 0}
+	{ NULL, 0, NULL, 0},
 };
 
-/*
- * @brief Parse the arguments passed into the test case.
- *
- * @param argc		 The number of arguments
- * @param argv		 The list of arguments
- * @param args		 Pointer to argument structure
- *
- * @return error
- *
- */
-static int
-parse_opt(int argc, char **argv, struct args *args)
+static int parse_opt(int argc, char * const argv[], struct args *args)
 {
 	char *endp;
 
 	while (1) {
 		int key;
 
-		key = getopt_long(argc, argv, "d:n:?V", long_options, NULL);
+		key = getopt_long(argc, argv, "d:n:hV", long_options, NULL);
 		if (key == -1)
 			break;
 
 		switch (key) {
-			case 'd': /* --devn=<device number> */
-				args->devn = strtoul(optarg, &endp, 0);
-				if (*endp != '\0' || endp == optarg ||
-					args->devn < 0) {
-					fprintf(stderr,
-						"Bad UBI device number: "
-						"\"%s\"\n", optarg);
-					goto out;
-				}
-				sprintf(args->node, "/dev/ubi%d", args->devn);
-				break;
-			case 'n': /* --volid=<volume id> */
-				args->vol_id = strtoul(optarg, &endp, 0);
-				if (*endp != '\0' || endp == optarg ||
-				    (args->vol_id < 0 &&
-				     args->vol_id != UBI_DYNAMIC_VOLUME)) {
-					fprintf(stderr, "Bad volume ID: "
-							"\"%s\"\n", optarg);
-					goto out;
-				}
-				break;
-			case ':':
-				fprintf(stderr, "Parameter is missing\n");
-				goto out;
-			case '?': /* help */
-				fprintf(stderr,
-					"Usage: ubirmvol [OPTION...]\n");
-				fprintf(stderr, "%s", doc);
-				fprintf(stderr, "%s", optionsstr);
-				fprintf(stderr, "\nReport bugs to %s\n",
-					PACKAGE_BUGREPORT);
-				exit(0);
-				break;
-			case 'V':
-				fprintf(stderr, "%s\n", PROGRAM_VERSION);
-				exit(0);
-				break;
-			default:
-				fprintf(stderr, "%s", usage);
-				exit(-1);
+
+		case 'd':
+			args->devn = strtoul(optarg, &endp, 0);
+			if (*endp != '\0' || endp == optarg || args->devn < 0) {
+				errmsg("bad UBI device number: \"%s\"", optarg);
+				return -1;
+			}
+
+			warnmsg("'-d' and '--devn' options are deprecated and will be "
+				"removed. Specify UBI device node name instead!\n"
+				"Example: " PROGRAM_NAME " /dev/ubi0, instead of "
+				PROGRAM_NAME " -d 0");
+			sprintf(args->node, "/dev/ubi%d", args->devn);
+			break;
+
+		case 'n':
+			args->vol_id = strtoul(optarg, &endp, 0);
+			if (*endp != '\0' || endp == optarg || args->vol_id < 0) {
+				errmsg("bad volume ID: " "\"%s\"", optarg);
+				return -1;
+			}
+			break;
+
+		case 'h':
+			fprintf(stderr, "%s\n\n", doc);
+			fprintf(stderr, "%s\n\n", usage);
+			fprintf(stderr, "%s\n", optionsstr);
+			exit(0);
+
+		case 'V':
+			fprintf(stderr, "%s\n", PROGRAM_VERSION);
+			exit(0);
+
+		case ':':
+			errmsg("parameter is missing");
+			goto out;
+
+		default:
+			fprintf(stderr, "Use -h for help\n");
+			exit(-1);
 		}
 	}
 
@@ -161,62 +135,73 @@ parse_opt(int argc, char **argv, struct args *args)
 static int param_sanity_check(struct args *args, libubi_t libubi)
 {
 	int err;
-	struct ubi_info ubi;
 
-	if (args->vol_id == -1) {
-		fprintf(stderr, "Volume ID was not specified\n");
-		goto out;
+	if (strlen(args->node) > MAX_NODE_LEN) {
+		errmsg("too long device node name: \"%s\" (%d characters), max. is %d",
+		       args->node, strlen(args->node), MAX_NODE_LEN);
+		return -1;
 	}
 
-	err = ubi_get_info(libubi, &ubi);
-	if (err)
+	if (args->vol_id == -1) {
+		errmsg("volume ID is was not specified");
 		return -1;
+	}
+
+	if (args->devn != -1) {
+		struct ubi_info ubi;
+
+		err = ubi_get_info(libubi, &ubi);
+		if (err) {
+			errmsg("cannot get UBI information");
+			perror("ubi_get_info");
+			return -1;
+		}
 
-	if (args->devn >= (int)ubi.dev_count) {
-		fprintf(stderr, "Device %d does not exist\n", args->devn);
-		goto out;
+		if (args->devn >= ubi.dev_count) {
+			errmsg("UBI device %d does not exist", args->devn);
+			return -1;
+		}
 	}
 
 	return 0;
-
-out:
-	errno = EINVAL;
-	return -1;
 }
 
 int main(int argc, char * const argv[])
 {
-	int err, old_errno;
+	int err;
 	libubi_t libubi;
 
-	err = parse_opt(argc, (char **)argv, &myargs);
+	strncpy(myargs.node, argv[1], MAX_NODE_LEN);
+
+	err = parse_opt(argc, argv, &myargs);
 	if (err)
-		return err == 1 ? 0 : -1;
+		return -1;
+
+	if (argc < 2) {
+		errmsg("UBI device name was not specified (use -h for help)");
+		return -1;
+	}
 
-	if (myargs.devn == -1) {
-		fprintf(stderr, "Device number was not specified\n");
-		fprintf(stderr, "Use -h option for help\n");
+	if (argc < 3) {
+		errmsg("too few arguments (use -h for help)");
 		return -1;
 	}
 
 	libubi = libubi_open();
 	if (libubi == NULL) {
-		perror("Cannot open libubi");
+		errmsg("cannot open libubi");
+		perror("libubi_open");
 		return -1;
 	}
 
 	err = param_sanity_check(&myargs, libubi);
-	if (err) {
-		perror("Input parameters check");
-		fprintf(stderr, "Use -h option for help\n");
+	if (err)
 		goto out_libubi;
-	}
 
 	err = ubi_rmvol(libubi, myargs.node, myargs.vol_id);
-	old_errno = errno;
-	if (err < 0) {
-		perror("Cannot remove volume");
-		fprintf(stderr, "    err=%d errno=%d\n", err, old_errno);
+	if (err) {
+		errmsg("cannot UBI remove volume");
+		perror("ubi_rmvol");
 		goto out_libubi;
 	}