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* process.c: no cuddle up else's.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2012-03-28 01:28:51 +00:00
parent 4e38091237
commit b95b56cc3a
1 changed files with 90 additions and 45 deletions
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135
process.c
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@ -4208,21 +4208,24 @@ p_uid_change_privilege(VALUE obj, VALUE id)
if (getuid() == uid) { if (getuid() == uid) {
if (SAVED_USER_ID == uid) { if (SAVED_USER_ID == uid) {
if (setreuid(-1, uid) < 0) rb_sys_fail(0); if (setreuid(-1, uid) < 0) rb_sys_fail(0);
} else { }
else {
if (uid == 0) { /* (r,e,s) == (root, root, x) */ if (uid == 0) { /* (r,e,s) == (root, root, x) */
if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0); if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0);
if (setreuid(SAVED_USER_ID, 0) < 0) rb_sys_fail(0); if (setreuid(SAVED_USER_ID, 0) < 0) rb_sys_fail(0);
SAVED_USER_ID = 0; /* (r,e,s) == (x, root, root) */ SAVED_USER_ID = 0; /* (r,e,s) == (x, root, root) */
if (setreuid(uid, uid) < 0) rb_sys_fail(0); if (setreuid(uid, uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} else { }
else {
if (setreuid(0, -1) < 0) rb_sys_fail(0); if (setreuid(0, -1) < 0) rb_sys_fail(0);
SAVED_USER_ID = 0; SAVED_USER_ID = 0;
if (setreuid(uid, uid) < 0) rb_sys_fail(0); if (setreuid(uid, uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} }
} }
} else { }
else {
if (setreuid(uid, uid) < 0) rb_sys_fail(0); if (setreuid(uid, uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} }
@ -4230,12 +4233,14 @@ p_uid_change_privilege(VALUE obj, VALUE id)
if (getuid() == uid) { if (getuid() == uid) {
if (SAVED_USER_ID == uid) { if (SAVED_USER_ID == uid) {
if (seteuid(uid) < 0) rb_sys_fail(0); if (seteuid(uid) < 0) rb_sys_fail(0);
} else { }
else {
if (uid == 0) { if (uid == 0) {
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0); if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
SAVED_USER_ID = 0; SAVED_USER_ID = 0;
if (setruid(0) < 0) rb_sys_fail(0); if (setruid(0) < 0) rb_sys_fail(0);
} else { }
else {
if (setruid(0) < 0) rb_sys_fail(0); if (setruid(0) < 0) rb_sys_fail(0);
SAVED_USER_ID = 0; SAVED_USER_ID = 0;
if (seteuid(uid) < 0) rb_sys_fail(0); if (seteuid(uid) < 0) rb_sys_fail(0);
@ -4243,7 +4248,8 @@ p_uid_change_privilege(VALUE obj, VALUE id)
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} }
} }
} else { }
else {
if (seteuid(uid) < 0) rb_sys_fail(0); if (seteuid(uid) < 0) rb_sys_fail(0);
if (setruid(uid) < 0) rb_sys_fail(0); if (setruid(uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
@ -4251,7 +4257,8 @@ p_uid_change_privilege(VALUE obj, VALUE id)
#else #else
rb_notimplement(); rb_notimplement();
#endif #endif
} else { /* unprivileged user */ }
else { /* unprivileged user */
#if defined(HAVE_SETRESUID) #if defined(HAVE_SETRESUID)
if (setresuid((getuid() == uid)? (rb_uid_t)-1: uid, if (setresuid((getuid() == uid)? (rb_uid_t)-1: uid,
(geteuid() == uid)? (rb_uid_t)-1: uid, (geteuid() == uid)? (rb_uid_t)-1: uid,
@ -4262,15 +4269,18 @@ p_uid_change_privilege(VALUE obj, VALUE id)
if (setreuid((getuid() == uid)? (rb_uid_t)-1: uid, if (setreuid((getuid() == uid)? (rb_uid_t)-1: uid,
(geteuid() == uid)? (rb_uid_t)-1: uid) < 0) (geteuid() == uid)? (rb_uid_t)-1: uid) < 0)
rb_sys_fail(0); rb_sys_fail(0);
} else if (getuid() != uid) { }
else if (getuid() != uid) {
if (setreuid(uid, (geteuid() == uid)? (rb_uid_t)-1: uid) < 0) if (setreuid(uid, (geteuid() == uid)? (rb_uid_t)-1: uid) < 0)
rb_sys_fail(0); rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} else if (/* getuid() == uid && */ geteuid() != uid) { }
else if (/* getuid() == uid && */ geteuid() != uid) {
if (setreuid(geteuid(), uid) < 0) rb_sys_fail(0); if (setreuid(geteuid(), uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
if (setreuid(uid, -1) < 0) rb_sys_fail(0); if (setreuid(uid, -1) < 0) rb_sys_fail(0);
} else { /* getuid() == uid && geteuid() == uid */ }
else { /* getuid() == uid && geteuid() == uid */
if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0); if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0);
if (setreuid(SAVED_USER_ID, uid) < 0) rb_sys_fail(0); if (setreuid(SAVED_USER_ID, uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
@ -4280,21 +4290,25 @@ p_uid_change_privilege(VALUE obj, VALUE id)
if (SAVED_USER_ID == uid) { if (SAVED_USER_ID == uid) {
if (geteuid() != uid && seteuid(uid) < 0) rb_sys_fail(0); if (geteuid() != uid && seteuid(uid) < 0) rb_sys_fail(0);
if (getuid() != uid && setruid(uid) < 0) rb_sys_fail(0); if (getuid() != uid && setruid(uid) < 0) rb_sys_fail(0);
} else if (/* SAVED_USER_ID != uid && */ geteuid() == uid) { }
else if (/* SAVED_USER_ID != uid && */ geteuid() == uid) {
if (getuid() != uid) { if (getuid() != uid) {
if (setruid(uid) < 0) rb_sys_fail(0); if (setruid(uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} else { }
else {
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0); if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
if (setruid(uid) < 0) rb_sys_fail(0); if (setruid(uid) < 0) rb_sys_fail(0);
} }
} else if (/* geteuid() != uid && */ getuid() == uid) { }
else if (/* geteuid() != uid && */ getuid() == uid) {
if (seteuid(uid) < 0) rb_sys_fail(0); if (seteuid(uid) < 0) rb_sys_fail(0);
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0); if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
if (setruid(uid) < 0) rb_sys_fail(0); if (setruid(uid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
@ -4303,21 +4317,24 @@ p_uid_change_privilege(VALUE obj, VALUE id)
/* (r,e,s)==(uid,?,?) ==> (uid,uid,uid) */ /* (r,e,s)==(uid,?,?) ==> (uid,uid,uid) */
if (setuid(uid) < 0) rb_sys_fail(0); if (setuid(uid) < 0) rb_sys_fail(0);
SAVED_USER_ID = uid; SAVED_USER_ID = uid;
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
#elif defined HAVE_SETEUID #elif defined HAVE_SETEUID
if (getuid() == uid && SAVED_USER_ID == uid) { if (getuid() == uid && SAVED_USER_ID == uid) {
if (seteuid(uid) < 0) rb_sys_fail(0); if (seteuid(uid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
#elif defined HAVE_SETUID #elif defined HAVE_SETUID
if (getuid() == uid && SAVED_USER_ID == uid) { if (getuid() == uid && SAVED_USER_ID == uid) {
if (setuid(uid) < 0) rb_sys_fail(0); if (setuid(uid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
@ -4462,7 +4479,8 @@ p_sys_issetugid(VALUE obj)
rb_secure(2); rb_secure(2);
if (issetugid()) { if (issetugid()) {
return Qtrue; return Qtrue;
} else { }
else {
return Qfalse; return Qfalse;
} }
} }
@ -4920,21 +4938,24 @@ p_gid_change_privilege(VALUE obj, VALUE id)
if (getgid() == gid) { if (getgid() == gid) {
if (SAVED_GROUP_ID == gid) { if (SAVED_GROUP_ID == gid) {
if (setregid(-1, gid) < 0) rb_sys_fail(0); if (setregid(-1, gid) < 0) rb_sys_fail(0);
} else { }
else {
if (gid == 0) { /* (r,e,s) == (root, y, x) */ if (gid == 0) { /* (r,e,s) == (root, y, x) */
if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0); if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0);
if (setregid(SAVED_GROUP_ID, 0) < 0) rb_sys_fail(0); if (setregid(SAVED_GROUP_ID, 0) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = 0; /* (r,e,s) == (x, root, root) */ SAVED_GROUP_ID = 0; /* (r,e,s) == (x, root, root) */
if (setregid(gid, gid) < 0) rb_sys_fail(0); if (setregid(gid, gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} else { /* (r,e,s) == (z, y, x) */ }
else { /* (r,e,s) == (z, y, x) */
if (setregid(0, 0) < 0) rb_sys_fail(0); if (setregid(0, 0) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = 0; SAVED_GROUP_ID = 0;
if (setregid(gid, gid) < 0) rb_sys_fail(0); if (setregid(gid, gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} }
} }
} else { }
else {
if (setregid(gid, gid) < 0) rb_sys_fail(0); if (setregid(gid, gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} }
@ -4942,13 +4963,15 @@ p_gid_change_privilege(VALUE obj, VALUE id)
if (getgid() == gid) { if (getgid() == gid) {
if (SAVED_GROUP_ID == gid) { if (SAVED_GROUP_ID == gid) {
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
} else { }
else {
if (gid == 0) { if (gid == 0) {
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0); if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = 0; SAVED_GROUP_ID = 0;
if (setrgid(0) < 0) rb_sys_fail(0); if (setrgid(0) < 0) rb_sys_fail(0);
} else { }
else {
if (setrgid(0) < 0) rb_sys_fail(0); if (setrgid(0) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = 0; SAVED_GROUP_ID = 0;
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
@ -4956,7 +4979,8 @@ p_gid_change_privilege(VALUE obj, VALUE id)
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} }
} }
} else { }
else {
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
if (setrgid(gid) < 0) rb_sys_fail(0); if (setrgid(gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
@ -4964,7 +4988,8 @@ p_gid_change_privilege(VALUE obj, VALUE id)
#else #else
rb_notimplement(); rb_notimplement();
#endif #endif
} else { /* unprivileged user */ }
else { /* unprivileged user */
#if defined(HAVE_SETRESGID) #if defined(HAVE_SETRESGID)
if (setresgid((getgid() == gid)? (rb_gid_t)-1: gid, if (setresgid((getgid() == gid)? (rb_gid_t)-1: gid,
(getegid() == gid)? (rb_gid_t)-1: gid, (getegid() == gid)? (rb_gid_t)-1: gid,
@ -4975,15 +5000,18 @@ p_gid_change_privilege(VALUE obj, VALUE id)
if (setregid((getgid() == gid)? (rb_uid_t)-1: gid, if (setregid((getgid() == gid)? (rb_uid_t)-1: gid,
(getegid() == gid)? (rb_uid_t)-1: gid) < 0) (getegid() == gid)? (rb_uid_t)-1: gid) < 0)
rb_sys_fail(0); rb_sys_fail(0);
} else if (getgid() != gid) { }
else if (getgid() != gid) {
if (setregid(gid, (getegid() == gid)? (rb_uid_t)-1: gid) < 0) if (setregid(gid, (getegid() == gid)? (rb_uid_t)-1: gid) < 0)
rb_sys_fail(0); rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} else if (/* getgid() == gid && */ getegid() != gid) { }
else if (/* getgid() == gid && */ getegid() != gid) {
if (setregid(getegid(), gid) < 0) rb_sys_fail(0); if (setregid(getegid(), gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
if (setregid(gid, -1) < 0) rb_sys_fail(0); if (setregid(gid, -1) < 0) rb_sys_fail(0);
} else { /* getgid() == gid && getegid() == gid */ }
else { /* getgid() == gid && getegid() == gid */
if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0); if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0);
if (setregid(SAVED_GROUP_ID, gid) < 0) rb_sys_fail(0); if (setregid(SAVED_GROUP_ID, gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
@ -4993,21 +5021,25 @@ p_gid_change_privilege(VALUE obj, VALUE id)
if (SAVED_GROUP_ID == gid) { if (SAVED_GROUP_ID == gid) {
if (getegid() != gid && setegid(gid) < 0) rb_sys_fail(0); if (getegid() != gid && setegid(gid) < 0) rb_sys_fail(0);
if (getgid() != gid && setrgid(gid) < 0) rb_sys_fail(0); if (getgid() != gid && setrgid(gid) < 0) rb_sys_fail(0);
} else if (/* SAVED_GROUP_ID != gid && */ getegid() == gid) { }
else if (/* SAVED_GROUP_ID != gid && */ getegid() == gid) {
if (getgid() != gid) { if (getgid() != gid) {
if (setrgid(gid) < 0) rb_sys_fail(0); if (setrgid(gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} else { }
else {
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0); if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
if (setrgid(gid) < 0) rb_sys_fail(0); if (setrgid(gid) < 0) rb_sys_fail(0);
} }
} else if (/* getegid() != gid && */ getgid() == gid) { }
else if (/* getegid() != gid && */ getgid() == gid) {
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0); if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
if (setrgid(gid) < 0) rb_sys_fail(0); if (setrgid(gid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
@ -5016,21 +5048,24 @@ p_gid_change_privilege(VALUE obj, VALUE id)
/* (r,e,s)==(gid,?,?) ==> (gid,gid,gid) */ /* (r,e,s)==(gid,?,?) ==> (gid,gid,gid) */
if (setgid(gid) < 0) rb_sys_fail(0); if (setgid(gid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = gid; SAVED_GROUP_ID = gid;
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
#elif defined HAVE_SETEGID #elif defined HAVE_SETEGID
if (getgid() == gid && SAVED_GROUP_ID == gid) { if (getgid() == gid && SAVED_GROUP_ID == gid) {
if (setegid(gid) < 0) rb_sys_fail(0); if (setegid(gid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
#elif defined HAVE_SETGID #elif defined HAVE_SETGID
if (getgid() == gid && SAVED_GROUP_ID == gid) { if (getgid() == gid && SAVED_GROUP_ID == gid) {
if (setgid(gid) < 0) rb_sys_fail(0); if (setgid(gid) < 0) rb_sys_fail(0);
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
@ -5120,7 +5155,8 @@ rb_seteuid_core(rb_uid_t euid)
if (uid != euid) { if (uid != euid) {
if (setresuid(-1,euid,euid) < 0) rb_sys_fail(0); if (setresuid(-1,euid,euid) < 0) rb_sys_fail(0);
SAVED_USER_ID = euid; SAVED_USER_ID = euid;
} else { }
else {
if (setresuid(-1,euid,-1) < 0) rb_sys_fail(0); if (setresuid(-1,euid,-1) < 0) rb_sys_fail(0);
} }
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID) #elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
@ -5249,7 +5285,8 @@ rb_setegid_core(rb_gid_t egid)
if (gid != egid) { if (gid != egid) {
if (setresgid(-1,egid,egid) < 0) rb_sys_fail(0); if (setresgid(-1,egid,egid) < 0) rb_sys_fail(0);
SAVED_GROUP_ID = egid; SAVED_GROUP_ID = egid;
} else { }
else {
if (setresgid(-1,egid,-1) < 0) rb_sys_fail(0); if (setresgid(-1,egid,-1) < 0) rb_sys_fail(0);
} }
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID) #elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
@ -5476,18 +5513,22 @@ p_uid_switch(VALUE obj)
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_uid_switch = 1; under_uid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, SAVED_USER_ID); return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, SAVED_USER_ID);
} else { }
else {
return UIDT2NUM(euid); return UIDT2NUM(euid);
} }
} else if (euid != SAVED_USER_ID) { }
else if (euid != SAVED_USER_ID) {
proc_seteuid(SAVED_USER_ID); proc_seteuid(SAVED_USER_ID);
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_uid_switch = 1; under_uid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, euid); return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, euid);
} else { }
else {
return UIDT2NUM(uid); return UIDT2NUM(uid);
} }
} else { }
else {
errno = EPERM; errno = EPERM;
rb_sys_fail(0); rb_sys_fail(0);
} }
@ -5518,7 +5559,8 @@ p_uid_switch(VALUE obj)
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_uid_switch = 1; under_uid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, obj); return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, obj);
} else { }
else {
return UIDT2NUM(euid); return UIDT2NUM(euid);
} }
} }
@ -5584,7 +5626,8 @@ p_gid_switch(VALUE obj)
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_gid_switch = 1; under_gid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, SAVED_GROUP_ID); return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, SAVED_GROUP_ID);
} else { }
else {
return GIDT2NUM(egid); return GIDT2NUM(egid);
} }
} }
@ -5593,7 +5636,8 @@ p_gid_switch(VALUE obj)
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_gid_switch = 1; under_gid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, egid); return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, egid);
} else { }
else {
return GIDT2NUM(gid); return GIDT2NUM(gid);
} }
} }
@ -5628,7 +5672,8 @@ p_gid_switch(VALUE obj)
if (rb_block_given_p()) { if (rb_block_given_p()) {
under_gid_switch = 1; under_gid_switch = 1;
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, obj); return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, obj);
} else { }
else {
return GIDT2NUM(egid); return GIDT2NUM(egid);
} }
} }