diff options
Diffstat (limited to 'helpers/mknod.c')
| -rw-r--r-- | helpers/mknod.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/helpers/mknod.c b/helpers/mknod.c index 9e40080..9504b09 100644 --- a/helpers/mknod.c +++ b/helpers/mknod.c @@ -142,6 +142,7 @@ main(int argc, char *argv[]) char type; long int major; long int minor; + size_t work_area_len; size_t specials_file_name_len; char *specials_file_name; char *specials_lock_name; @@ -229,6 +230,27 @@ main(int argc, char *argv[]) return EXIT_FAILURE; } + /* Find path of file relative to binary package data directory within + * build work area. */ + work_area_len = strlen(work_area); + if (work_area[work_area_len - 1] == '/') { + --work_area_len; + } + if (strncmp(name, work_area, work_area_len) != 0 || + name[work_area_len] != '/') { + _err(_("Node \"%s\" not within work area \"%s\""), + name, work_area); + return EXIT_FAILURE; + } + do { + ++work_area_len; + if (name[work_area_len] == '\0') { + _err(_("Node \"%s\" not within a binary package data " + "directory"), name); + return EXIT_FAILURE; + } + } while (name[work_area_len] != '/'); + specials_file_name_len = strlen(work_area) + strlen("/specials") + 1; specials_file_name = malloc(specials_file_name_len * 2 + 1); if (specials_file_name == NULL) { @@ -297,7 +319,7 @@ main(int argc, char *argv[]) } if (fprintf(specials_file, "%c %8ld %8ld %s\n", - type, major, minor, name) < 0) { + type, major, minor, name + work_area_len) < 0) { _errno(_("Failed to write specials file")); fclose(specials_file); unlink(specials_lock_name); |