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Option to drop LD_PRELOAD from emulated environment, by Lauri Leukkunen.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2985 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-06-17 16:38:39 +00:00
parent ffb04fcf08
commit b12b6a188e
1 changed files with 34 additions and 9 deletions
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43
linux-user/main.c
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@ -1666,11 +1666,12 @@ void usage(void)
"usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] [-cpu model] program [arguments...]\n" "usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] [-cpu model] program [arguments...]\n"
"Linux CPU emulator (compiled for %s emulation)\n" "Linux CPU emulator (compiled for %s emulation)\n"
"\n" "\n"
"-h print this help\n" "-h print this help\n"
"-g port wait gdb connection to port\n" "-g port wait gdb connection to port\n"
"-L path set the elf interpreter prefix (default=%s)\n" "-L path set the elf interpreter prefix (default=%s)\n"
"-s size set the stack size in bytes (default=%ld)\n" "-s size set the stack size in bytes (default=%ld)\n"
"-cpu model select CPU (-cpu ? for list)\n" "-cpu model select CPU (-cpu ? for list)\n"
"-drop-ld-preload drop LD_PRELOAD for target process\n"
"\n" "\n"
"debug options:\n" "debug options:\n"
#ifdef USE_CODE_COPY #ifdef USE_CODE_COPY
@ -1702,7 +1703,9 @@ int main(int argc, char **argv)
int optind; int optind;
const char *r; const char *r;
int gdbstub_port = 0; int gdbstub_port = 0;
int drop_ld_preload = 0, environ_count = 0;
char **target_environ, **wrk, **dst;
if (argc <= 1) if (argc <= 1)
usage(); usage();
@ -1774,6 +1777,8 @@ int main(int argc, char **argv)
#endif #endif
_exit(1); _exit(1);
} }
} else if (!strcmp(r, "drop-ld-preload")) {
drop_ld_preload = 1;
} else } else
#ifdef USE_CODE_COPY #ifdef USE_CODE_COPY
if (!strcmp(r, "no-code-copy")) { if (!strcmp(r, "no-code-copy")) {
@ -1802,11 +1807,31 @@ int main(int argc, char **argv)
env = cpu_init(); env = cpu_init();
global_env = env; global_env = env;
if (loader_exec(filename, argv+optind, environ, regs, info) != 0) { wrk = environ;
printf("Error loading %s\n", filename); while (*(wrk++))
_exit(1); environ_count++;
target_environ = malloc((environ_count + 1) * sizeof(char *));
if (!target_environ)
abort();
for (wrk = environ, dst = target_environ; *wrk; wrk++) {
if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11))
continue;
*(dst++) = strdup(*wrk);
}
dst = NULL; /* NULL terminate target_environ */
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
printf("Error loading %s\n", filename);
_exit(1);
}
for (wrk = target_environ; *wrk; wrk++) {
free(*wrk);
} }
free(target_environ);
if (loglevel) { if (loglevel) {
page_dump(logfile); page_dump(logfile);