X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=lsmod.c;h=76ed2fdd8f0ea2d999e3be9d1f0f69103933beee;hb=63ae66198d3f2d51d077a8fbcdaf1e5fe80a210f;hp=c97d199a69e40d262cd86011ac05cc9b52998dc8;hpb=cbe31dace5fb24304694d399b9eb267fbe752516;p=oweals%2Fbusybox.git

diff --git a/lsmod.c b/lsmod.c
index c97d199a6..76ed2fdd8 100644
--- a/lsmod.c
+++ b/lsmod.c
@@ -27,6 +27,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 #include <stddef.h>
 #include <errno.h>
 #include <unistd.h>
@@ -51,8 +52,7 @@ struct module_info
 };
 
 
-int query_module(const char *name, int which, void *buf, size_t bufsize,
-		 size_t *ret);
+int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret);
 
 /* Values for query_module's which.  */
 static const int QM_MODULES = 1;
@@ -69,19 +69,36 @@ static const int NEW_MOD_VISITED = 8;
 static const int NEW_MOD_USED_ONCE = 16;
 static const int NEW_MOD_INITIALIZING = 64;
 
+static int my_query_module(const char *name, int which, void **buf,
+		size_t *bufsize, size_t *ret)
+{
+	int my_ret;
+
+	my_ret = query_module(name, which, *buf, *bufsize, ret);
+
+	if (my_ret == -1 && errno == ENOSPC) {
+		*buf = xrealloc(*buf, *ret);
+		*bufsize = *ret;
+
+		my_ret = query_module(name, which, *buf, *bufsize, ret);
+	}
+
+	return my_ret;
+}
 
 extern int lsmod_main(int argc, char **argv)
 {
 	struct module_info info;
 	char *module_names, *mn, *deps, *dn;
-	size_t bufsize, nmod, count, i, j;
+	size_t bufsize, depsize, nmod, count, i, j;
 
 	module_names = xmalloc(bufsize = 256);
-	deps = xmalloc(bufsize);
-	if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
+	if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize,
+				&nmod)) {
 		perror_msg_and_die("QM_MODULES");
 	}
 
+	deps = xmalloc(depsize = 256);
 	printf("Module                  Size  Used by\n");
 	for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
 		if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
@@ -92,23 +109,14 @@ extern int lsmod_main(int argc, char **argv)
 			/* else choke */
 			perror_msg_and_die("module %s: QM_INFO", mn);
 		}
-		while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
+		if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) {
 			if (errno == ENOENT) {
 				/* The module was removed out from underneath us. */
 				continue;
 			}
-			if (errno != ENOSPC) {
-				error_msg_and_die("module %s: QM_REFS", mn);
-			}
-			deps = xrealloc(deps, bufsize = count);
+			perror_msg_and_die("module %s: QM_REFS", mn);
 		}
 		printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
-		if (count) printf("[");
-		for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
-			printf("%s%s", dn, (j==count-1)? "":" ");
-		}
-		if (count) printf("] ");
-
 		if (info.flags & NEW_MOD_DELETED)
 			printf("(deleted)");
 		else if (info.flags & NEW_MOD_INITIALIZING)
@@ -121,6 +129,12 @@ extern int lsmod_main(int argc, char **argv)
 			if (!(info.flags & NEW_MOD_USED_ONCE))
 				printf("(unused)");
 		}
+		if (count) printf("[");
+		for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
+			printf("%s%s", dn, (j==count-1)? "":" ");
+		}
+		if (count) printf("] ");
+
 		printf("\n");
 	}