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authorEric Andersen2000-08-21 19:25:16 +0000
committerEric Andersen2000-08-21 19:25:16 +0000
commitbe0dc0d06a730bd3a9e7567af6918a673d5135ee (patch)
tree502706beed7931e673ea0436e912873e84ba2577 /modutils
parentb2fc5a06479bb0fcf0f39bea756a5994cbca72b8 (diff)
downloadbusybox-be0dc0d06a730bd3a9e7567af6918a673d5135ee.zip
busybox-be0dc0d06a730bd3a9e7567af6918a673d5135ee.tar.gz
lsmod now uses the query_module syscall, rather then /proc
-Erik
Diffstat (limited to 'modutils')
-rw-r--r--modutils/lsmod.c82
1 files changed, 72 insertions, 10 deletions
diff --git a/modutils/lsmod.c b/modutils/lsmod.c
index 6eb9c56..2a238cd 100644
--- a/modutils/lsmod.c
+++ b/modutils/lsmod.c
@@ -22,19 +22,81 @@
*/
#include "internal.h"
+#include <stdlib.h>
#include <stdio.h>
+#include <stddef.h>
+#include <errno.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <ctype.h>
+#include <assert.h>
+#include <getopt.h>
+#include <sys/utsname.h>
+
+
+
+struct module_info
+{
+ unsigned long addr;
+ unsigned long size;
+ unsigned long flags;
+ long usecount;
+};
+
+
+int query_module(const char *name, int which, void *buf, size_t bufsize,
+ size_t *ret);
+
+/* Values for query_module's which. */
+#define QM_MODULES 1
+#define QM_DEPS 2
+#define QM_REFS 3
+#define QM_SYMBOLS 4
+#define QM_INFO 5
+
extern int lsmod_main(int argc, char **argv)
{
-#if defined BB_FEATURE_USE_DEVPS_PATCH
- char *filename = "/dev/modules";
-#else
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
-#endif
- char *filename = "/proc/modules";
-#endif
-
- return(print_file_by_name(filename));
+ struct module_info info;
+ char *module_names, *mn, *deps, *dn;
+ size_t bufsize, nmod, count, i, j;
+
+ module_names = xmalloc(bufsize = 256);
+ deps = xmalloc(bufsize);
+ if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
+ fatalError("QM_MODULES: %s\n", strerror(errno));
+ }
+
+ 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)) {
+ if (errno == ENOENT) {
+ /* The module was removed out from underneath us. */
+ continue;
+ }
+ /* else choke */
+ fatalError("module %s: QM_INFO: %s\n", mn, strerror(errno));
+ }
+ while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
+ if (errno == ENOENT) {
+ /* The module was removed out from underneath us. */
+ continue;
+ }
+ if (errno != ENOSPC) {
+ fatalError("module %s: QM_REFS: %s", mn, strerror(errno));
+ }
+ deps = xrealloc(deps, bufsize = count);
+ }
+ 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("]");
+ printf("\n");
+ }
+
+
+ return( 0);
}