mirror of https://github.com/omar-polo/gmid.git
add tests and compat for setresuid and setresgid
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parent
06035a0237
commit
bd8683d0fd
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@ -13,6 +13,8 @@ DISTFILES = Makefile \
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reallocarray.c \
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recallocarray.c \
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setproctitle.c \
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setresgid.c \
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setresuid.c \
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strlcat.c \
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strlcpy.c \
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strtonum.c \
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@ -0,0 +1,32 @@
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/*
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* Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <unistd.h>
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int
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setresgid(gid_t rgid, gid_t egid, gid_t sgid)
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{
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/* this is the only configuration tested */
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if (rgid != egid || egid != sgid)
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return -1;
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if (setregid(rgid, egid) == -1)
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return -1;
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return 0;
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}
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@ -0,0 +1,60 @@
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/*
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* Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <unistd.h>
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int
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setresuid(uid_t ruid, uid_t euid, uid_t suid)
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{
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uid_t ouid;
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int ret = -1;
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/* Allow only the tested configuration. */
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if (ruid != euid || euid != suid) {
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errno = ENOSYS;
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return -1;
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}
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ouid = getuid();
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if ((ret = setreuid(euid, euid)) == -1)
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return -1;
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/*
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* When real, effective and saved uids are the same and we have
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* changed uids, sanity check that we cannot restore the old uid.
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*/
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if (ruid == euid && euid == suid && ouid != ruid &&
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setuid(ouid) != -1 && seteuid(ouid) != -1) {
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errno = EINVAL;
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return -1;
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}
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/*
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* Finally, check that the real and effective uids are what we
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* expect.
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*/
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if (getuid() != ruid || geteuid() != euid) {
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errno = EACCES;
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return -1;
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}
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return ret;
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}
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@ -258,6 +258,8 @@ runtest queue_h QUEUE_H || true
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runtest reallocarray REALLOCARRAY || true
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runtest recallocarray RECALLOCARRAY || true
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runtest setproctitle SETPROCTITLE || true
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runtest setresgid SETRESGID "" -D_GNU_SOURCE || true
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runtest setresuid SETRESUID "" -D_GNU_SOURCE || true
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runtest strlcat STRLCAT || true
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runtest strlcpy STRLCPY || true
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runtest strtonum STRTONUM || true
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@ -343,6 +345,8 @@ cat <<__HEREDOC__
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#define HAVE_REALLOCARRAY ${HAVE_REALLOCARRAY}
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#define HAVE_RECALLOCARRAY ${HAVE_RECALLOCARRAY}
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#define HAVE_SETPROCTITLE ${HAVE_SETPROCTITLE}
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#define HAVE_SETRESGID ${HAVE_SETRESGID}
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#define HAVE_SETRESUID ${HAVE_SETRESUID}
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#define HAVE_STRLCAT ${HAVE_STRLCAT}
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#define HAVE_STRLCPY ${HAVE_STRLCPY}
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#define HAVE_STRTONUM ${HAVE_STRTONUM}
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@ -359,6 +363,9 @@ __HEREDOC__
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${HAVE_STRLCPY} -eq 0 -o \
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${HAVE_STRTONUM} -eq 0 ] && echo "#include <stddef.h>"
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[ ${HAVE_SETRESGID} -eq 0 -o \
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${HAVE_SETRESUID} -eq 0 ] && echo "#include <unistd.h>"
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if [ ${HAVE_ERR} -eq 0 ]; then
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echo "extern void err(int, const char*, ...);"
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echo "extern void errx(int, const char*, ...);"
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@ -407,6 +414,14 @@ if [ ${HAVE_SETPROCTITLE} -eq 0 ]; then
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echo "extern void setproctitle(const char *fmt, ...);"
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COBJS="${COBJS} compat/setproctitle.o"
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fi
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if [ ${HAVE_SETRESGID} -eq 0 ]; then
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echo "extern int setresgid(gid_t, gid_t, gid_t);"
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COBJS="${COBJS} compat/setresgid.o"
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fi
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if [ ${HAVE_SETRESUID} -eq 0 ]; then
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echo "extern int setresuid(uid_t, uid_t, uid_t);"
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COBJS="${COBJS} compat/setresuid.o"
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fi
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if [ ${HAVE_STRLCAT} -eq 0 ]; then
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echo "extern size_t strlcat(char*, const char*, size_t);"
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COBJS="${COBJS} compat/strlcat.o"
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@ -19,6 +19,8 @@ DISTFILES = Makefile \
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reallocarray.c \
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recallocarray.c \
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setproctitle.c \
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setresgid.c \
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setresuid.c \
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strlcat.c \
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strlcpy.c \
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strtonum.c \
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@ -0,0 +1,8 @@
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#include <sys/types.h>
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#include <unistd.h>
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int
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main(void)
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{
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return setresgid(-1, -1, -1) == -1;
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}
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@ -0,0 +1,8 @@
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#include <sys/types.h>
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#include <unistd.h>
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int
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main(void)
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{
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return setresuid(-1, -1, -1) == -1;
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}
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