diff options
Diffstat (limited to 'ldso/util')
| -rw-r--r-- | ldso/util/ldd.c | 48 |
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; |