* process.c (obj2uid, obj2gid): check the error number returned by
  `getpwnam_r()` and `getgrnam_r()`, instead of `errno`.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-05-11 02:38:09 +00:00
Родитель 6657567eba
Коммит cb302650a0
1 изменённых файлов: 8 добавлений и 20 удалений

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@ -173,11 +173,6 @@ static void check_gid_switch(void);
VALUE getpw_buf = 0
# define FINISH_GETPWNAM \
(getpw_buf ? (void)rb_str_resize(getpw_buf, 0) : (void)0)
# ifdef __APPLE__
# define GETPWNAM_R_RETRY_P(e) (e == 0 || e == ERANGE)
# else
# define GETPWNAM_R_RETRY_P(e) (e == ERANGE)
# endif
# define OBJ2UID1(id) obj2uid((id), &getpw_buf)
# define OBJ2UID(id) obj2uid0(id)
static rb_uid_t obj2uid(VALUE id, VALUE *getpw_buf);
@ -220,11 +215,6 @@ static rb_uid_t obj2uid(VALUE id);
VALUE getgr_buf = 0
# define FINISH_GETGRNAM \
(getgr_buf ? (void)rb_str_resize(getgr_buf, 0) : (void)0)
# ifdef __APPLE__
# define GETGRNAM_R_RETRY_P(e) (e == 0 || e == ERANGE)
# else
# define GETGRNAM_R_RETRY_P(e) (e == ERANGE)
# endif
# define OBJ2GID1(id) obj2gid((id), &getgr_buf)
# define OBJ2GID(id) obj2gid0(id)
static rb_gid_t obj2gid(VALUE id, VALUE *getgr_buf);
@ -5040,6 +5030,7 @@ obj2uid(VALUE id
struct passwd pwbuf;
char *getpw_buf;
long getpw_buf_len;
int e;
if (!*getpw_tmp) {
getpw_buf_len = GETPW_R_SIZE_INIT;
if (getpw_buf_len < 0) getpw_buf_len = GETPW_R_SIZE_DEFAULT;
@ -5048,11 +5039,9 @@ obj2uid(VALUE id
getpw_buf = RSTRING_PTR(*getpw_tmp);
getpw_buf_len = rb_str_capacity(*getpw_tmp);
rb_str_set_len(*getpw_tmp, getpw_buf_len);
errno = ERANGE;
/* gepwnam_r() on MacOS X doesn't set errno if buffer size is insufficient */
while (getpwnam_r(usrname, &pwbuf, getpw_buf, getpw_buf_len, &pwptr)) {
int e = errno;
if (!GETPWNAM_R_RETRY_P(e) || getpw_buf_len >= GETPW_R_SIZE_LIMIT) {
errno = 0;
while ((e = getpwnam_r(usrname, &pwbuf, getpw_buf, getpw_buf_len, &pwptr)) != 0) {
if (e != ERANGE || getpw_buf_len >= GETPW_R_SIZE_LIMIT) {
rb_str_resize(*getpw_tmp, 0);
rb_syserr_fail(e, "getpwnam_r");
}
@ -5118,6 +5107,7 @@ obj2gid(VALUE id
struct group grbuf;
char *getgr_buf;
long getgr_buf_len;
int e;
if (!*getgr_tmp) {
getgr_buf_len = GETGR_R_SIZE_INIT;
if (getgr_buf_len < 0) getgr_buf_len = GETGR_R_SIZE_DEFAULT;
@ -5126,11 +5116,9 @@ obj2gid(VALUE id
getgr_buf = RSTRING_PTR(*getgr_tmp);
getgr_buf_len = rb_str_capacity(*getgr_tmp);
rb_str_set_len(*getgr_tmp, getgr_buf_len);
errno = ERANGE;
/* gegrnam_r() on MacOS X doesn't set errno if buffer size is insufficient */
while (getgrnam_r(grpname, &grbuf, getgr_buf, getgr_buf_len, &grptr)) {
int e = errno;
if (!GETGRNAM_R_RETRY_P(e) || getgr_buf_len >= GETGR_R_SIZE_LIMIT) {
errno = 0;
while ((e = getgrnam_r(grpname, &grbuf, getgr_buf, getgr_buf_len, &grptr)) != 0) {
if (e != ERANGE || getgr_buf_len >= GETGR_R_SIZE_LIMIT) {
rb_str_resize(*getgr_tmp, 0);
rb_syserr_fail(e, "getgrnam_r");
}