+/*
+ * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
+ * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
+ * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
+ * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 2003-2016 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2014-2017 The strace developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef STRACE_UID_SIZE
+# if STRACE_UID_SIZE != 16
+# error invalid STRACE_UID_SIZE
+# endif
+
+# define SIZEIFY(x) SIZEIFY_(x, STRACE_UID_SIZE)
+# define SIZEIFY_(x, size) SIZEIFY__(x, size)
+# define SIZEIFY__(x, size) x ## size
+
+# define printuid SIZEIFY(printuid)
+# define sys_chown SIZEIFY(sys_chown)
+# define sys_fchown SIZEIFY(sys_fchown)
+# define sys_getgroups SIZEIFY(sys_getgroups)
+# define sys_getresuid SIZEIFY(sys_getresuid)
+# define sys_getuid SIZEIFY(sys_getuid)
+# define sys_setfsuid SIZEIFY(sys_setfsuid)
+# define sys_setgroups SIZEIFY(sys_setgroups)
+# define sys_setresuid SIZEIFY(sys_setresuid)
+# define sys_setreuid SIZEIFY(sys_setreuid)
+# define sys_setuid SIZEIFY(sys_setuid)
+#endif /* STRACE_UID_SIZE */
+
#include "defs.h"
-#include <asm/posix_types.h>
+#ifdef STRACE_UID_SIZE
+# if !NEED_UID16_PARSERS
+# undef STRACE_UID_SIZE
+# endif
+#else
+# define STRACE_UID_SIZE 32
+#endif
-int
-sys_getuid(struct tcb *tcp)
+#ifdef STRACE_UID_SIZE
+
+# undef uid_t
+# define uid_t uid_t_(STRACE_UID_SIZE)
+# define uid_t_(size) uid_t__(size)
+# define uid_t__(size) uint ## size ## _t
+
+SYS_FUNC(getuid)
{
- if (exiting(tcp))
- tcp->u_rval = (uid_t) tcp->u_rval;
- return RVAL_UDECIMAL;
+ return RVAL_UDECIMAL | RVAL_DECODED;
}
-int
-sys_setfsuid(struct tcb *tcp)
+SYS_FUNC(setfsuid)
{
- if (entering(tcp))
- tprintf("%u", (uid_t) tcp->u_arg[0]);
- else
- tcp->u_rval = (uid_t) tcp->u_rval;
- return RVAL_UDECIMAL;
+ printuid("", tcp->u_arg[0]);
+
+ return RVAL_UDECIMAL | RVAL_DECODED;
}
-int
-sys_setuid(struct tcb *tcp)
+SYS_FUNC(setuid)
{
- if (entering(tcp)) {
- tprintf("%u", (uid_t) tcp->u_arg[0]);
- }
- return 0;
+ printuid("", tcp->u_arg[0]);
+
+ return RVAL_DECODED;
}
-int
-sys_getresuid(struct tcb *tcp)
+static void
+get_print_uid(struct tcb *const tcp, const char *const prefix,
+ const kernel_ulong_t addr)
{
- if (exiting(tcp)) {
- __kernel_uid_t uid;
- if (syserror(tcp))
- tprintf("%#lx, %#lx, %#lx", tcp->u_arg[0],
- tcp->u_arg[1], tcp->u_arg[2]);
- else {
- if (umove(tcp, tcp->u_arg[0], &uid) < 0)
- tprintf("%#lx, ", tcp->u_arg[0]);
- else
- tprintf("[%lu], ", (unsigned long) uid);
- if (umove(tcp, tcp->u_arg[1], &uid) < 0)
- tprintf("%#lx, ", tcp->u_arg[1]);
- else
- tprintf("[%lu], ", (unsigned long) uid);
- if (umove(tcp, tcp->u_arg[2], &uid) < 0)
- tprintf("%#lx", tcp->u_arg[2]);
- else
- tprintf("[%lu]", (unsigned long) uid);
- }
+ uid_t uid;
+
+ tprints(prefix);
+ if (!umove_or_printaddr(tcp, addr, &uid)) {
+ printuid("[", uid);
+ tprints("]");
}
- return 0;
}
-int
-sys_setreuid(struct tcb *tcp)
+SYS_FUNC(getresuid)
{
- if (entering(tcp)) {
- printuid("", tcp->u_arg[0]);
- printuid(", ", tcp->u_arg[1]);
- }
+ if (entering(tcp))
+ return 0;
+
+ get_print_uid(tcp, "", tcp->u_arg[0]);
+ get_print_uid(tcp, ", ", tcp->u_arg[1]);
+ get_print_uid(tcp, ", ", tcp->u_arg[2]);
+
return 0;
}
-int
-sys_setresuid(struct tcb *tcp)
+SYS_FUNC(setreuid)
{
- if (entering(tcp)) {
- printuid("", tcp->u_arg[0]);
- printuid(", ", tcp->u_arg[1]);
- printuid(", ", tcp->u_arg[2]);
- }
- return 0;
+ printuid("", tcp->u_arg[0]);
+ printuid(", ", tcp->u_arg[1]);
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(setresuid)
+{
+ printuid("", tcp->u_arg[0]);
+ printuid(", ", tcp->u_arg[1]);
+ printuid(", ", tcp->u_arg[2]);
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(chown)
+{
+ printpath(tcp, tcp->u_arg[0]);
+ printuid(", ", tcp->u_arg[1]);
+ printuid(", ", tcp->u_arg[2]);
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(fchown)
+{
+ printfd(tcp, tcp->u_arg[0]);
+ printuid(", ", tcp->u_arg[1]);
+ printuid(", ", tcp->u_arg[2]);
+
+ return RVAL_DECODED;
}
void
printuid(const char *text, const unsigned int uid)
{
- if ((unsigned int) -1 == uid)
+ if ((uid_t) -1U == (uid_t) uid)
tprintf("%s-1", text);
else
- tprintf("%s%u", text, uid);
+ tprintf("%s%u", text, (uid_t) uid);
+}
+
+static bool
+print_gid(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
+{
+ printuid("", (*(uid_t *) elem_buf));
+
+ return true;
}
+
+static void
+print_groups(struct tcb *const tcp, const unsigned int len,
+ const kernel_ulong_t addr)
+{
+ static unsigned long ngroups_max;
+ if (!ngroups_max)
+ ngroups_max = sysconf(_SC_NGROUPS_MAX);
+
+ if (len > ngroups_max) {
+ printaddr(addr);
+ return;
+ }
+
+ uid_t gid;
+ print_array(tcp, addr, len, &gid, sizeof(gid),
+ umoven_or_printaddr, print_gid, 0);
+}
+
+SYS_FUNC(setgroups)
+{
+ const int len = tcp->u_arg[0];
+
+ tprintf("%d, ", len);
+ print_groups(tcp, len, tcp->u_arg[1]);
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(getgroups)
+{
+ if (entering(tcp))
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ else
+ print_groups(tcp, tcp->u_rval, tcp->u_arg[1]);
+ return 0;
+}
+
+#endif /* STRACE_UID_SIZE */
projects / strace / blobdiff