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Index: usr.bin/posixshmcontrol/posixshmcontrol.1
===================================================================
--- usr.bin/posixshmcontrol/posixshmcontrol.1
+++ usr.bin/posixshmcontrol/posixshmcontrol.1
@@ -120,7 +120,7 @@
To show content of the shared memory segment with the path
.Pa /1 ,
use the command
-.Dl "posixshmcontrol dump /q | hexdump -C"
+.Dl "posixshmcontrol dump /1 | hexdump -C"
.It
To create a segment with the path
.Pa /2
Index: usr.bin/posixshmcontrol/posixshmcontrol.c
===================================================================
--- usr.bin/posixshmcontrol/posixshmcontrol.c
+++ usr.bin/posixshmcontrol/posixshmcontrol.c
@@ -152,9 +152,14 @@
return (2);
}
}
-
argc -= optind;
argv += optind;
+
+ if (argc == 0) {
+ usage();
+ return (2);
+ }
+
ret = 0;
for (i = 0; i < argc; i++) {
ret1 = create_one_shm(argv[i], mode, idx);
@@ -184,6 +189,11 @@
{
int i, ret, ret1;
+ if (argc == 1) {
+ usage();
+ return (2);
+ }
+
ret = 0;
for (i = 1; i < argc; i++) {
ret1 = delete_one_shm(argv[i]);
@@ -352,6 +362,11 @@
{
int i, ret, ret1;
+ if (argc == 1) {
+ usage();
+ return (2);
+ }
+
ret = 0;
for (i = 1; i < argc; i++) {
ret1 = read_one_shm(argv[i]);
@@ -438,6 +453,11 @@
argc -= optind;
argv += optind;
+ if (argc == 0) {
+ usage();
+ return (2);
+ }
+
ret = 0;
for (i = 0; i < argc; i++) {
ret1 = stat_one_shm(argv[i], hsize, uname);
@@ -478,16 +498,21 @@
switch (c) {
case 's':
if (expand_number(optarg, &newsize) == -1)
- err(1, "size:");
+ err(1, "size");
break;
case '?':
default:
return (2);
}
}
-
argc -= optind;
argv += optind;
+
+ if (argc == 0) {
+ usage();
+ return (2);
+ }
+
ret = 0;
for (i = 0; i < argc; i++) {
ret1 = truncate_one_shm(argv[i], newsize);

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