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lsmod now uses the query_module syscall, rather then /proc

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-Erik
This commit is contained in:
Eric Andersen
2000-08-21 19:25:16 +00:00
parent b2fc5a0647
commit be0dc0d06a
3 changed files with 143 additions and 18 deletions
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1
Changelog
View File

@@ -11,6 +11,7 @@
cleaner too, thanks to Allen Soard <esp-software@mail.hypermart.net>
* Add optional ls file sorting, thanks to a patch from
Sterling Huxley <sterling@europa.com>
* lsmod now uses the query_module syscall, rather then /proc
-Erik Andersen

80
lsmod.c
View File

@@ -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
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, nmod, count, i, j;
return(print_file_by_name(filename));
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);
}

80
modutils/lsmod.c
View File

@@ -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
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, nmod, count, i, j;
return(print_file_by_name(filename));
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);
}