diff options
Diffstat (limited to 'libsandbox/libsandbox.c')
| -rw-r--r-- | libsandbox/libsandbox.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/libsandbox/libsandbox.c b/libsandbox/libsandbox.c index 7c97c52..908a150 100644 --- a/libsandbox/libsandbox.c +++ b/libsandbox/libsandbox.c @@ -144,7 +144,8 @@ static const char *sb_get_cmdline(pid_t pid) * 1 - path is in @path (no resolution necessary) * 2 - errno issues -- ignore this path */ -int resolve_dirfd_path(int dirfd, const char *path, char *resolved_path) +int resolve_dirfd_path(int dirfd, const char *path, char *resolved_path, + size_t resolved_path_len) { /* The *at style functions have the following semantics: * - dirfd = AT_FDCWD: same as non-at func: file is based on CWD @@ -158,7 +159,7 @@ int resolve_dirfd_path(int dirfd, const char *path, char *resolved_path) save_errno(); - size_t at_len = sizeof(resolved_path) - 1 - 1 - (path ? strlen(path) : 0); + size_t at_len = resolved_path_len - 1 - 1 - (path ? strlen(path) : 0); sprintf(resolved_path, "/proc/%i/fd/%i", trace_pid ? : getpid(), dirfd); ssize_t ret = readlink(resolved_path, resolved_path, at_len); if (ret == -1) { @@ -1059,7 +1060,7 @@ bool before_syscall(int dirfd, int sb_nr, const char *func, const char *file, in } } - switch (resolve_dirfd_path(dirfd, file, at_file_buf)) { + switch (resolve_dirfd_path(dirfd, file, at_file_buf, sizeof(at_file_buf))) { case -1: return false; case 0: file = at_file_buf; break; case 2: return true; |