/*
- * tiny fuser implementation
- *
+ * tiny fuser implementation
+ *
* Copyright 2004 Tony J. White
*
* May be distributed under the conditions of the
* GNU Library General Public License
*/
-/* this define is needed for asprintf() */
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/socket.h>
+#include <sys/sysmacros.h>
#include "busybox.h"
#define FUSER_PROC_DIR "/proc"
#define FUSER_OPT_MOUNT 1
#define FUSER_OPT_KILL 2
-#define FUSER_OPT_SILENT 4
-#define FUSER_OPT_IP6 8
-#define FUSER_OPT_IP4 16
+#define FUSER_OPT_SILENT 4
+#define FUSER_OPT_IP6 8
+#define FUSER_OPT_IP4 16
typedef struct inode_list {
ino_t inode;
struct pid_list *next;
} pid_list;
-static int fuser_option(char *option)
+static int fuser_option(char *option)
{
int opt = 0;
if(!(strlen(option))) return 0;
if(option[0] != '-') return 0;
- *++option;
+ ++option;
while(*option != '\0') {
if(*option == 'm') opt |= FUSER_OPT_MOUNT;
else if(*option == 'k') opt |= FUSER_OPT_KILL;
else if(*option == '4') opt |= FUSER_OPT_IP4;
else {
bb_error_msg_and_die(
- "Unsupported option '%c'", *option);
+ "Unsupported option '%c'", *option);
}
- *++option;
+ ++option;
}
return opt;
}
{
struct stat f_stat;
if((stat(filename, &f_stat)) < 0) return 0;
- memcpy(inode, &f_stat.st_ino, sizeof(ino_t));
- memcpy(dev, &f_stat.st_dev, sizeof(dev_t));
- return 1;
+ *inode = f_stat.st_ino;
+ *dev = f_stat.st_dev;
+ return 1;
}
-static int fuser_find_socket_dev(dev_t *dev) {
+static int fuser_find_socket_dev(dev_t *dev)
+{
int fd = socket(PF_INET, SOCK_DGRAM,0);
struct stat buf;
-
+
if (fd >= 0 && (fstat(fd, &buf)) == 0) {
- memcpy(dev, &buf.st_dev, sizeof(dev_t));
+ *dev = buf.st_dev;
close(fd);
return 1;
}
return 0;
}
-static int fuser_parse_net_arg(const char *filename,
- const char **proto, int *port)
+static int fuser_parse_net_arg(const char *filename,
+ const char **proto, int *port)
{
- int tport;
- char path[PATH_MAX+1], tproto[5];
+ char path[sizeof(FUSER_PROC_DIR)+12], tproto[5];
- if((sscanf(filename, "%d/%4s", &tport, &tproto[0])) != 2) return 0;
- strncpy(path, FUSER_PROC_DIR, sizeof(FUSER_PROC_DIR));
- strncat(path, "/net/", 5);
- strncat(path, tproto, strlen(tproto));
+ if((sscanf(filename, "%d/%4s", port, tproto)) != 2) return 0;
+ sprintf(path, "%s/net/%s", FUSER_PROC_DIR, tproto);
if((access(path, R_OK)) != 0) return 0;
- *proto = bb_xstrndup(tproto, strlen(tproto));
- memcpy(port, &tport, sizeof(int));
- return 1;
+ *proto = bb_xstrdup(tproto);
+ return 1;
}
static int fuser_add_pid(pid_list *plist, pid_t pid)
{
- pid_list *curr = NULL, *last = NULL;
-
- if(plist->pid == 0) plist->pid = pid;
- curr = plist;
- while(curr != NULL) {
- if(curr->pid == pid) return 1;
- last = curr;
- curr = curr->next;
- }
- curr = xmalloc(sizeof(pid_list));
- last->next = curr;
- curr->pid = pid;
+ pid_list *curr = NULL, *last = NULL;
+
+ if(plist->pid == 0) plist->pid = pid;
+ curr = plist;
+ while(curr != NULL) {
+ if(curr->pid == pid) return 1;
+ last = curr;
+ curr = curr->next;
+ }
+ curr = xmalloc(sizeof(pid_list));
+ last->next = curr;
+ curr->pid = pid;
curr->next = NULL;
- return 1;
+ return 1;
}
static int fuser_add_inode(inode_list *ilist, dev_t dev, ino_t inode)
{
- inode_list *curr = NULL, *last = NULL;
-
- if(!ilist->inode && !ilist->dev) {
+ inode_list *curr = NULL, *last = NULL;
+
+ if(!ilist->inode && !ilist->dev) {
ilist->dev = dev;
ilist->inode = inode;
}
- curr = ilist;
- while(curr != NULL) {
- if(curr->inode == inode && curr->dev == dev) return 1;
- last = curr;
- curr = curr->next;
- }
- curr = xmalloc(sizeof(inode_list));
- last->next = curr;
- curr->dev = dev;
- curr->inode = inode;
+ curr = ilist;
+ while(curr != NULL) {
+ if(curr->inode == inode && curr->dev == dev) return 1;
+ last = curr;
+ curr = curr->next;
+ }
+ curr = xmalloc(sizeof(inode_list));
+ last->next = curr;
+ curr->dev = dev;
+ curr->inode = inode;
curr->next = NULL;
- return 1;
+ return 1;
}
-static int fuser_scan_proc_net(int opts, const char *proto,
- int port, inode_list *ilist)
+static int fuser_scan_proc_net(int opts, const char *proto,
+ int port, inode_list *ilist)
{
- char path[PATH_MAX+1], line[FUSER_MAX_LINE+1];
+ char path[sizeof(FUSER_PROC_DIR)+12], line[FUSER_MAX_LINE+1];
char addr[128];
ino_t tmp_inode;
dev_t tmp_dev;
+ long long uint64_inode;
int tmp_port;
FILE *f;
if(!fuser_find_socket_dev(&tmp_dev)) tmp_dev = 0;
-
- strncpy(path, FUSER_PROC_DIR, sizeof(FUSER_PROC_DIR));
- strncat(path, "/net/", 5);
- strncat(path, proto, strlen(proto));
+ sprintf(path, "%s/net/%s", FUSER_PROC_DIR, proto);
if (!(f = fopen(path, "r"))) return 0;
while(fgets(line, FUSER_MAX_LINE, f)) {
if(sscanf(line,
"%*d: %64[0-9A-Fa-f]:%x %*x:%*x %*x %*x:%*x "
- "%*x:%*x %*x %*d %*d %lu",
- &addr[0], &tmp_port, &tmp_inode) == 3) {
- if((strlen(addr) == 8) &&
+ "%*x:%*x %*x %*d %*d %llu",
+ addr, &tmp_port, &uint64_inode) == 3) {
+ if((strlen(addr) == 8) &&
(opts & FUSER_OPT_IP6)) continue;
else if((strlen(addr) > 8) &&
- (opts & FUSER_OPT_IP4)) continue;
+ (opts & FUSER_OPT_IP4)) continue;
if(tmp_port == port) {
+ tmp_inode = uint64_inode;
fuser_add_inode(ilist, tmp_dev, tmp_inode);
}
}
return 1;
}
-static int fuser_search_dev_inode(int opts, inode_list *ilist,
- dev_t dev, ino_t inode)
+static int fuser_search_dev_inode(int opts, inode_list *ilist,
+ dev_t dev, ino_t inode)
{
- inode_list *curr;
- curr = ilist;
+ inode_list *curr;
+ curr = ilist;
- while(curr) {
+ while(curr) {
if((opts & FUSER_OPT_MOUNT) && curr->dev == dev)
return 1;
if(curr->inode == inode && curr->dev == dev)
return 1;
- curr = curr->next;
- }
- return 0;
+ curr = curr->next;
+ }
+ return 0;
}
static int fuser_scan_pid_maps(int opts, const char *fname, pid_t pid,
- inode_list *ilist, pid_list *plist)
+ inode_list *ilist, pid_list *plist)
{
FILE *file;
char line[FUSER_MAX_LINE + 1];
int major, minor;
ino_t inode;
+ long long uint64_inode;
dev_t dev;
if (!(file = fopen(fname, "r"))) return 0;
while (fgets(line, FUSER_MAX_LINE, file)) {
- if(sscanf(line, "%*s %*s %*s %x:%x %ld",
- &major, &minor, &inode) != 3) continue;
+ if(sscanf(line, "%*s %*s %*s %x:%x %llu",
+ &major, &minor, &uint64_inode) != 3) continue;
+ inode = uint64_inode;
if(major == 0 && minor == 0 && inode == 0) continue;
- dev = makedev(major, minor);
+ dev = makedev(major, minor);
if(fuser_search_dev_inode(opts, ilist, dev, inode)) {
fuser_add_pid(plist, pid);
}
-
+
}
fclose(file);
return 1;
}
-static int fuser_scan_link(int opts, const char *lname, pid_t pid,
- inode_list *ilist, pid_list *plist)
+static int fuser_scan_link(int opts, const char *lname, pid_t pid,
+ inode_list *ilist, pid_list *plist)
{
ino_t inode;
- dev_t dev;
+ dev_t dev;
if(!fuser_file_to_dev_inode(lname, &dev, &inode)) return 0;
- if(fuser_search_dev_inode(opts, ilist, dev, inode))
+ if(fuser_search_dev_inode(opts, ilist, dev, inode))
fuser_add_pid(plist, pid);
return 1;
}
if((d = opendir(dname))) {
while((de = readdir(d)) != NULL) {
- if(!(strcmp(de->d_name, "."))) continue;
- if(!(strcmp(de->d_name, ".."))) continue;
- if(asprintf(&lname, "%s/%s", dname, de->d_name) < 0) {
- free(lname);
+ lname = concat_subpath_file(dname, de->d_name);
+ if(lname == NULL)
continue;
- }
fuser_scan_link(opts, lname, pid, ilist, plist);
free(lname);
}
else return 0;
return 1;
-}
+}
-static int fuser_scan_proc_pids(int opts, inode_list *ilist, pid_list *plist)
+static int fuser_scan_proc_pids(int opts, inode_list *ilist, pid_list *plist)
{
DIR *d;
struct dirent *de;
while((de = readdir(d)) != NULL) {
pid = (pid_t)atoi(de->d_name);
if(!pid) continue;
- if(asprintf(&dname, "%s/%d/", FUSER_PROC_DIR, pid) < 0) {
- free(dname);
- continue;
- }
+ dname = concat_subpath_file(FUSER_PROC_DIR, de->d_name);
if(chdir(dname) < 0) {
free(dname);
- continue;
+ continue;
}
free(dname);
fuser_scan_link(opts, "cwd", pid, ilist, plist);
fuser_scan_dir_links(opts, "lib", pid, ilist, plist);
fuser_scan_dir_links(opts, "mmap", pid, ilist, plist);
fuser_scan_pid_maps(opts, "maps", pid, ilist, plist);
- }
- closedir(d);
+ chdir("..");
+ }
+ closedir(d);
return 1;
}
-static int fuser_print_pid_list(pid_list *plist) {
- pid_list *curr;
- curr = plist;
+static int fuser_print_pid_list(pid_list *plist)
+{
+ pid_list *curr = plist;
if(plist == NULL) return 0;
while(curr != NULL) {
return 1;
}
-static int fuser_kill_pid_list(pid_list *plist, int sig) {
- pid_list *curr;
- curr = plist;
+static int fuser_kill_pid_list(pid_list *plist, int sig)
+{
+ pid_list *curr = plist;
pid_t mypid = getpid();
int success = 1;
if(plist == NULL) return 0;
- while(curr != NULL) {
+ while(curr != NULL) {
if(curr->pid > 0 && curr->pid != mypid) {
- if (kill(curr->pid, sig) != 0) {
- bb_perror_msg(
+ if (kill(curr->pid, sig) != 0) {
+ bb_perror_msg(
"Could not kill pid '%d'", curr->pid);
- success = 0;
+ success = 0;
}
}
- curr = curr->next;
- }
- return success;
+ curr = curr->next;
+ }
+ return success;
}
-extern int fuser_main(int argc, char **argv) {
+int fuser_main(int argc, char **argv)
+{
int port, i, optn;
int* fni; /* file name indexes of argv */
int fnic = 0; /* file name index count */
int killsig = SIGTERM;
int success = 1;
+ if (argc < 2)
+ bb_show_usage();
+
fni = xmalloc(sizeof(int));
for(i=1;i<argc;i++) {
optn = fuser_option(argv[i]);
- if(optn) opt |= optn;
+ if(optn) opt |= optn;
else if(argv[i][0] == '-') {
if(!(u_signal_names(argv[i]+1, &killsig, 0)))
killsig = SIGTERM;
free(inodes);
/* return 0 on (success == 1) 1 otherwise */
return (success != 1);
-}
+}
projects / oweals / busybox.git / blobdiff