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-rw-r--r--ldso/util/ldd.c48
1 files changed, 36 insertions, 12 deletions
diff --git a/ldso/util/ldd.c b/ldso/util/ldd.c
index f613815af..d4d7fcce9 100644
--- a/ldso/util/ldd.c
+++ b/ldso/util/ldd.c
@@ -37,6 +37,8 @@
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
+#include <sys/types.h>
+#include <sys/wait.h>
#include "bswap.h"
#if defined (sun)
@@ -488,15 +490,15 @@ int find_dependancies(char* filename)
if (!filename) {
fprintf(stderr, "No filename specified.\n");
- exit(EXIT_FAILURE);
+ return -1;
}
if (!(thefile = fopen(filename, "r"))) {
perror(filename);
- exit(EXIT_FAILURE);
+ return -1;
}
if (fstat(fileno(thefile), &statbuf) < 0) {
perror(filename);
- exit(EXIT_FAILURE);
+ return -1;
}
if (statbuf.st_size < sizeof(Elf32_Ehdr))
@@ -510,12 +512,12 @@ foo:
/* Check if this looks like a legit ELF file */
if (check_elf_header(ehdr)) {
fprintf(stderr, "%s: not an ELF file.\n", filename);
- exit(EXIT_FAILURE);
+ return -1;
}
/* Check if this is the right kind of ELF file */
if (ehdr->e_type != ET_EXEC && ehdr->e_type != ET_DYN) {
fprintf(stderr, "%s: not a dynamic executable\n", filename);
- exit(EXIT_FAILURE);
+ return -1;
}
if (ehdr->e_type == ET_EXEC) {
if (statbuf.st_mode & S_ISUID)
@@ -536,15 +538,27 @@ foo:
{
struct stat statbuf;
if (stat(interp->path, &statbuf) == 0 && S_ISREG(statbuf.st_mode)) {
+ pid_t pid;
+ int status;
static const char * const environment[] = {
"PATH=/usr/bin:/bin:/usr/sbin:/sbin",
"SHELL=/bin/sh",
"LD_TRACE_LOADED_OBJECTS=1",
NULL
};
- /* Cool, it looks like we should be able to actually
- * run this puppy. Do so now... */
- execle(filename, filename, NULL, environment);
+
+ if ((pid = fork()) == 0) {
+ /* Cool, it looks like we should be able to actually
+ * run this puppy. Do so now... */
+ execle(filename, filename, NULL, environment);
+ _exit(0xdead);
+ }
+
+ /* Wait till it returns */
+ waitpid(pid, &status, 0);
+ if (WIFEXITED(status)!=0xdead) {
+ return 1;
+ }
/* If the exec failed, we fall through to trying to find
* all the needed libraries ourselves by rummaging about
@@ -600,7 +614,12 @@ int main( int argc, char** argv)
exit(EXIT_FAILURE);
}
- find_dependancies(filename);
+ if (multi) {
+ printf("%s:\n", *argv);
+ }
+
+ if (find_dependancies(filename)!=0)
+ continue;
while(got_em_all) {
got_em_all=0;
@@ -618,9 +637,6 @@ int main( int argc, char** argv)
/* Print the list */
got_em_all=0;
- if (multi) {
- printf("%s:\n", *argv);
- }
for (cur = lib_list; cur; cur=cur->next) {
got_em_all=1;
printf("\t%s => %s (0x00000000)\n", cur->name, cur->path);
@@ -629,6 +645,14 @@ int main( int argc, char** argv)
printf("\t%s => %s (0x00000000)\n", interp, interp);
if (got_em_all==0)
printf("\tnot a dynamic executable\n");
+
+ for (cur = lib_list; cur; cur=cur->next) {
+ free(cur->name);
+ cur->name=NULL;
+ free(cur->path);
+ cur->path=NULL;
+ }
+ lib_list=NULL;
}
return 0;