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Formerly misc.c.~19~

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This commit is contained in:
Roland McGrath 1993-01-05 23:02:42 +00:00
parent c0c67164d5
commit d19c2ef049
1 changed files with 29 additions and 15 deletions
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44
misc.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. /* Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
This file is part of GNU Make. This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify GNU Make is free software; you can redistribute it and/or modify
@ -527,7 +527,8 @@ user_access ()
We now want to set the effective user and group IDs to the real IDs, We now want to set the effective user and group IDs to the real IDs,
which are the IDs of the process that exec'd make. */ which are the IDs of the process that exec'd make. */
#if defined (USG) || defined (POSIX) #ifndef HAVE_SETREUID
/* System V has only the setuid/setgid calls to set user/group IDs. /* System V has only the setuid/setgid calls to set user/group IDs.
There is an effective ID, which can be set by setuid/setgid. There is an effective ID, which can be set by setuid/setgid.
It can be set (unless you are root) only to either what it already is It can be set (unless you are root) only to either what it already is
@ -535,21 +536,30 @@ user_access ()
the real ID (return by getuid/getgid, now in user_uid/user_gid), the real ID (return by getuid/getgid, now in user_uid/user_gid),
or the saved set ID (what the effective ID was before this set-ID or the saved set ID (what the effective ID was before this set-ID
executable (make) was exec'd). */ executable (make) was exec'd). */
if (setuid (user_uid) < 0) if (setuid (user_uid) < 0)
pfatal_with_name ("setuid"); pfatal_with_name ("user_access: setuid");
if (setgid (user_gid) < 0)
pfatal_with_name ("setgid");
#else #else
/* In 4BSD, the setreuid/setregid calls set both the real and effective IDs. /* In 4BSD, the setreuid/setregid calls set both the real and effective IDs.
They may be set to themselves or each other. So you have two alternatives They may be set to themselves or each other. So you have two alternatives
at any one time. If you use setuid/setgid, the effective will be set to at any one time. If you use setuid/setgid, the effective will be set to
the real, leaving only one alternative. Using setreuid/setregid, however, the real, leaving only one alternative. Using setreuid/setregid, however,
you can toggle between your two alternatives by swapping the values in a you can toggle between your two alternatives by swapping the values in a
single setreuid or setregid call. */ single setreuid or setregid call. */
if (setreuid (make_uid, user_uid) < 0) if (setreuid (make_uid, user_uid) < 0)
pfatal_with_name ("setreuid"); pfatal_with_name ("user_access: setreuid");
#endif
#ifndef HAVE_SETREGID
if (setgid (user_gid) < 0)
pfatal_with_name ("user_access: setgid");
#else
if (setregid (make_gid, user_gid) < 0) if (setregid (make_gid, user_gid) < 0)
pfatal_with_name ("setregid"); pfatal_with_name ("user_access: setregid");
#endif #endif
current_access = user; current_access = user;
@ -568,16 +578,20 @@ make_access ()
/* See comments in user_access, above. */ /* See comments in user_access, above. */
#if defined (USG) || defined (POSIX) #ifndef HAVE_SETREUID
if (setuid (make_uid) < 0) if (setuid (make_uid) < 0)
pfatal_with_name ("setuid"); pfatal_with_name ("make_access: setuid");
if (setgid (make_gid) < 0)
pfatal_with_name ("setgid");
#else #else
if (setreuid (user_uid, make_uid) < 0) if (setreuid (user_uid, make_uid) < 0)
pfatal_with_name ("setreuid"); pfatal_with_name ("make_access: setreuid");
#endif
#ifndef HAVE_SETREGID
if (setgid (make_gid) < 0)
pfatal_with_name ("make_access: setgid");
#else
if (setregid (user_gid, make_gid) < 0) if (setregid (user_gid, make_gid) < 0)
pfatal_with_name ("setregid"); pfatal_with_name ("make_access: setregid");
#endif #endif
current_access = make; current_access = make;
@ -592,9 +606,9 @@ child_access ()
They cannot be changed back to make's. */ They cannot be changed back to make's. */
if (setuid (user_uid) < 0) if (setuid (user_uid) < 0)
pfatal_with_name ("setuid"); pfatal_with_name ("child_access: setuid");
if (setgid (user_gid) < 0) if (setgid (user_gid) < 0)
pfatal_with_name ("setgid"); pfatal_with_name ("child_access: setgid");
} }
#ifdef NEED_GET_PATH_MAX #ifdef NEED_GET_PATH_MAX