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author"Vladimir N. Oleynik"2005-10-28 16:08:47 +0000
committer"Vladimir N. Oleynik"2005-10-28 16:08:47 +0000
commit7eb8e453484c2dc75fbbdb76348c55134041a909 (patch)
tree9f1b2405b7f27c818022a612545c603fd4e9bac9 /procps/fuser.c
parentea97282af1e95b9cd7ea4939bcfebd8da589f979 (diff)
downloadbusybox-7eb8e453484c2dc75fbbdb76348c55134041a909.zip
busybox-7eb8e453484c2dc75fbbdb76348c55134041a909.tar.gz
Please don't use if(asprintf(&t)<0) free(t); Use concat_subpath_file() for scan dir. Added losed chdir(".."). Removed warnings for 64-bit inode size. Why use memcpy and do not let? Very strange code for me
Diffstat (limited to 'procps/fuser.c')
-rw-r--r--procps/fuser.c55
1 files changed, 21 insertions, 34 deletions
diff --git a/procps/fuser.c b/procps/fuser.c
index 2f53685..66e0988 100644
--- a/procps/fuser.c
+++ b/procps/fuser.c
@@ -7,11 +7,6 @@
* 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>
@@ -72,8 +67,8 @@ static int fuser_file_to_dev_inode(const char *filename,
{
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));
+ *inode = f_stat.st_ino;
+ *dev = f_stat.st_dev;
return 1;
}
@@ -82,7 +77,7 @@ static int fuser_find_socket_dev(dev_t *dev) {
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;
}
@@ -92,16 +87,12 @@ static int fuser_find_socket_dev(dev_t *dev) {
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));
+ *proto = bb_xstrdup(tproto);
return 1;
}
@@ -148,30 +139,29 @@ static int fuser_add_inode(inode_list *ilist, dev_t dev, ino_t inode)
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;
+ uint64_t 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) {
+ "%*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;
if(tmp_port == port) {
+ tmp_inode = uint64_inode;
fuser_add_inode(ilist, tmp_dev, tmp_inode);
}
}
@@ -204,12 +194,14 @@ static int fuser_scan_pid_maps(int opts, const char *fname, pid_t pid,
char line[FUSER_MAX_LINE + 1];
int major, minor;
ino_t inode;
+ uint64_t 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);
if(fuser_search_dev_inode(opts, ilist, dev, inode)) {
@@ -242,12 +234,9 @@ static int fuser_scan_dir_links(int opts, const char *dname, pid_t pid,
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);
}
@@ -269,10 +258,7 @@ static int fuser_scan_proc_pids(int opts, inode_list *ilist, pid_list *plist)
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;
@@ -285,6 +271,7 @@ static int fuser_scan_proc_pids(int opts, inode_list *ilist, pid_list *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);
+ chdir("..");
}
closedir(d);
return 1;