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fix iscsi-ls parameter parse

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If invalid option is input with iscsi-ls，such as "iscsi-ls -a iscsi://", the command just stuck here and do not print useful information for the user to correct.
Fix this problem with getopt_long.
This commit is contained in:
sallyjunjun
2022-06-08 10:02:04 +08:00
committed by Bart Van Assche
parent b087a09a0b
commit 045c2387e7
1 changed files with 41 additions and 23 deletions
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64
utils/iscsi-ls.c
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@@ -40,6 +40,7 @@ WSADATA wsaData;
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <getopt.h>
#include "iscsi.h"
#include "scsi-lowlevel.h"
@@ -328,7 +329,7 @@ void print_help(void)
fprintf(stderr, " -i, --initiator-name=iqn-name Initiatorname to use\n");
fprintf(stderr, " -d, --debug Print debug information\n");
fprintf(stderr, " -s, --show-luns Show the luns for each target\n");
fprintf(stderr, " --url Output targets in URL format\n");
fprintf(stderr, " -U, --url Output targets in URL format\n");
fprintf(stderr, " (does not work with -s)\n");
fprintf(stderr, "\n");
fprintf(stderr, "Help options:\n");
@@ -349,7 +350,8 @@ int main(int argc, char *argv[])
struct iscsi_url *iscsi_url = NULL;
struct client_state state;
char *url = NULL;
int i;
int c;
int option_index;
static int show_help = 0, show_usage = 0, debug = 0;
#ifdef _WIN32
@@ -359,31 +361,44 @@ int main(int argc, char *argv[])
}
#endif
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-?") ||
!strcmp(argv[i], "-h") ||
!strcmp(argv[i], "--help")) {
show_help = 1;
} else if (!strcmp(argv[i], "-u") ||
!strcmp(argv[i], "-usage")) {
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"usage", no_argument, NULL, 'u'},
{"debug", no_argument, NULL, 'd'},
{"initiator-name", required_argument, NULL, 'i'},
{"show-luns", no_argument, NULL, 's'},
{"url", no_argument, NULL, 'U'},
{0, 0, 0, 0}
};
while ((c = getopt_long(argc, argv, "h?udi:sU", long_options,
&option_index)) != -1) {
switch (c) {
case 'h':
case '?':
show_help = 1;
break;
case 'u':
show_usage = 1;
} else if (!strcmp(argv[i], "-d") ||
!strcmp(argv[i], "--debug")) {
break;
case 'd':
debug = 1;
} else if (!strcmp(argv[i], "-i") ||
!strcmp(argv[i], "--initiator-name")) {
initiator = argv[++i];
} else if (!strcmp(argv[i], "-s") ||
!strcmp(argv[i], "--show-luns")) {
break;
case 'i':
initiator = optarg;
break;
case 's':
showluns = 1;
} else if (!strcmp(argv[i], "-U") ||
!strcmp(argv[i], "--url")) {
break;
case 'U':
useurls = 1;
} else if (!strncmp("iscsi://", argv[i], 8) ||
!strncmp("iser://", argv[i], 7)) {
url = strdup(argv[i]);
}
}
break;
default:
fprintf(stderr, "Unrecognized option '%c'\n\n", c);
print_help();
exit(0);
}
}
if (show_help != 0) {
print_help();
@@ -397,6 +412,9 @@ int main(int argc, char *argv[])
memset(&state, 0, sizeof(state));
if (argv[optind] != NULL) {
url = strdup(argv[optind]);
}
if (url == NULL) {
fprintf(stderr, "You must specify iscsi target portal.\n");
print_usage();