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-rw-r--r--usr/gen_init_cpio.c43
1 files changed, 23 insertions, 20 deletions
diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
index af0f22fb1ef7..aca6edcbbc6f 100644
--- a/usr/gen_init_cpio.c
+++ b/usr/gen_init_cpio.c
@@ -303,7 +303,7 @@ static int cpio_mkfile(const char *name, const char *location,
303 int retval; 303 int retval;
304 int rc = -1; 304 int rc = -1;
305 int namesize; 305 int namesize;
306 int i; 306 unsigned int i;
307 307
308 mode |= S_IFREG; 308 mode |= S_IFREG;
309 309
@@ -381,25 +381,28 @@ error:
381 381
382static char *cpio_replace_env(char *new_location) 382static char *cpio_replace_env(char *new_location)
383{ 383{
384 char expanded[PATH_MAX + 1]; 384 char expanded[PATH_MAX + 1];
385 char env_var[PATH_MAX + 1]; 385 char env_var[PATH_MAX + 1];
386 char *start; 386 char *start;
387 char *end; 387 char *end;
388 388
389 for (start = NULL; (start = strstr(new_location, "${")); ) { 389 for (start = NULL; (start = strstr(new_location, "${")); ) {
390 end = strchr(start, '}'); 390 end = strchr(start, '}');
391 if (start < end) { 391 if (start < end) {
392 *env_var = *expanded = '\0'; 392 *env_var = *expanded = '\0';
393 strncat(env_var, start + 2, end - start - 2); 393 strncat(env_var, start + 2, end - start - 2);
394 strncat(expanded, new_location, start - new_location); 394 strncat(expanded, new_location, start - new_location);
395 strncat(expanded, getenv(env_var), PATH_MAX); 395 strncat(expanded, getenv(env_var),
396 strncat(expanded, end + 1, PATH_MAX); 396 PATH_MAX - strlen(expanded));
397 strncpy(new_location, expanded, PATH_MAX); 397 strncat(expanded, end + 1,
398 } else 398 PATH_MAX - strlen(expanded));
399 break; 399 strncpy(new_location, expanded, PATH_MAX);
400 } 400 new_location[PATH_MAX] = 0;
401 401 } else
402 return new_location; 402 break;
403 }
404
405 return new_location;
403} 406}
404 407
405 408