1#ifdef STRACE_UID_SIZE
2# if STRACE_UID_SIZE != 16
3#  error invalid STRACE_UID_SIZE
4# endif
5
6# define SIZEIFY(x)		SIZEIFY_(x,STRACE_UID_SIZE)
7# define SIZEIFY_(x,size)	SIZEIFY__(x,size)
8# define SIZEIFY__(x,size)	x ## size
9
10# define printuid	SIZEIFY(printuid)
11# define sys_chown	SIZEIFY(sys_chown)
12# define sys_fchown	SIZEIFY(sys_fchown)
13# define sys_getgroups	SIZEIFY(sys_getgroups)
14# define sys_getresuid	SIZEIFY(sys_getresuid)
15# define sys_getuid	SIZEIFY(sys_getuid)
16# define sys_setfsuid	SIZEIFY(sys_setfsuid)
17# define sys_setgroups	SIZEIFY(sys_setgroups)
18# define sys_setresuid	SIZEIFY(sys_setresuid)
19# define sys_setreuid	SIZEIFY(sys_setreuid)
20# define sys_setuid	SIZEIFY(sys_setuid)
21#endif /* STRACE_UID_SIZE */
22
23#include "defs.h"
24
25#ifdef STRACE_UID_SIZE
26# if !NEED_UID16_PARSERS
27#  undef STRACE_UID_SIZE
28# endif
29#else
30# define STRACE_UID_SIZE 32
31#endif
32
33#ifdef STRACE_UID_SIZE
34
35# undef uid_t
36# define uid_t		uid_t_(STRACE_UID_SIZE)
37# define uid_t_(size)	uid_t__(size)
38# define uid_t__(size)	uint ## size ## _t
39
40SYS_FUNC(getuid)
41{
42	if (exiting(tcp))
43		tcp->u_rval = (uid_t) tcp->u_rval;
44	return RVAL_UDECIMAL;
45}
46
47SYS_FUNC(setfsuid)
48{
49	if (entering(tcp))
50		tprintf("%u", (uid_t) tcp->u_arg[0]);
51	else
52		tcp->u_rval = (uid_t) tcp->u_rval;
53	return RVAL_UDECIMAL;
54}
55
56SYS_FUNC(setuid)
57{
58	if (entering(tcp)) {
59		tprintf("%u", (uid_t) tcp->u_arg[0]);
60	}
61	return 0;
62}
63
64static void
65get_print_uid(struct tcb *tcp, const char *prefix, const long addr)
66{
67	uid_t uid;
68
69	if (umove(tcp, addr, &uid) < 0)
70		tprintf("%s%#lx", prefix, addr);
71	else
72		tprintf("%s[%u]", prefix, uid);
73}
74
75SYS_FUNC(getresuid)
76{
77	if (exiting(tcp)) {
78		if (syserror(tcp)) {
79			tprintf("%#lx, %#lx, %#lx", tcp->u_arg[0],
80				tcp->u_arg[1], tcp->u_arg[2]);
81		} else {
82			get_print_uid(tcp, "", tcp->u_arg[0]);
83			get_print_uid(tcp, ", ", tcp->u_arg[1]);
84			get_print_uid(tcp, ", ", tcp->u_arg[2]);
85		}
86	}
87	return 0;
88}
89
90SYS_FUNC(setreuid)
91{
92	if (entering(tcp)) {
93		printuid("", tcp->u_arg[0]);
94		printuid(", ", tcp->u_arg[1]);
95	}
96	return 0;
97}
98
99SYS_FUNC(setresuid)
100{
101	if (entering(tcp)) {
102		printuid("", tcp->u_arg[0]);
103		printuid(", ", tcp->u_arg[1]);
104		printuid(", ", tcp->u_arg[2]);
105	}
106	return 0;
107}
108
109SYS_FUNC(chown)
110{
111	if (entering(tcp)) {
112		printpath(tcp, tcp->u_arg[0]);
113		printuid(", ", tcp->u_arg[1]);
114		printuid(", ", tcp->u_arg[2]);
115	}
116	return 0;
117}
118
119SYS_FUNC(fchown)
120{
121	if (entering(tcp)) {
122		printfd(tcp, tcp->u_arg[0]);
123		printuid(", ", tcp->u_arg[1]);
124		printuid(", ", tcp->u_arg[2]);
125	}
126	return 0;
127}
128
129void
130printuid(const char *text, const unsigned int uid)
131{
132	if ((unsigned int) -1 == uid || (uid_t) -1 == uid)
133		tprintf("%s-1", text);
134	else
135		tprintf("%s%u", text, uid);
136}
137
138SYS_FUNC(setgroups)
139{
140	if (entering(tcp)) {
141		unsigned long len, size, start, cur, end, abbrev_end;
142		uid_t gid;
143		int failed = 0;
144
145		len = tcp->u_arg[0];
146		tprintf("%lu, ", len);
147		if (len == 0) {
148			tprints("[]");
149			return 0;
150		}
151		start = tcp->u_arg[1];
152		if (start == 0) {
153			tprints("NULL");
154			return 0;
155		}
156		size = len * sizeof(gid);
157		end = start + size;
158		if (!verbose(tcp) || size / sizeof(gid) != len || end < start) {
159			tprintf("%#lx", start);
160			return 0;
161		}
162		if (abbrev(tcp)) {
163			abbrev_end = start + max_strlen * sizeof(gid);
164			if (abbrev_end < start)
165				abbrev_end = end;
166		} else {
167			abbrev_end = end;
168		}
169		tprints("[");
170		for (cur = start; cur < end; cur += sizeof(gid)) {
171			if (cur > start)
172				tprints(", ");
173			if (cur >= abbrev_end) {
174				tprints("...");
175				break;
176			}
177			if (umoven(tcp, cur, sizeof(gid), &gid) < 0) {
178				tprints("?");
179				failed = 1;
180				break;
181			}
182			tprintf("%u", (unsigned int) gid);
183		}
184		tprints("]");
185		if (failed)
186			tprintf(" %#lx", tcp->u_arg[1]);
187	}
188	return 0;
189}
190
191SYS_FUNC(getgroups)
192{
193	unsigned long len;
194
195	if (entering(tcp)) {
196		len = tcp->u_arg[0];
197		tprintf("%lu, ", len);
198	} else {
199		unsigned long size, start, cur, end, abbrev_end;
200		uid_t gid;
201		int failed = 0;
202
203		start = tcp->u_arg[1];
204		if (start == 0) {
205			tprints("NULL");
206			return 0;
207		}
208		len = tcp->u_rval;
209		if (len == 0) {
210			tprints("[]");
211			return 0;
212		}
213		size = len * sizeof(gid);
214		end = start + size;
215		if (!verbose(tcp) || tcp->u_arg[0] == 0 ||
216		    size / sizeof(gid) != len || end < start) {
217			tprintf("%#lx", start);
218			return 0;
219		}
220		if (abbrev(tcp)) {
221			abbrev_end = start + max_strlen * sizeof(gid);
222			if (abbrev_end < start)
223				abbrev_end = end;
224		} else {
225			abbrev_end = end;
226		}
227		tprints("[");
228		for (cur = start; cur < end; cur += sizeof(gid)) {
229			if (cur > start)
230				tprints(", ");
231			if (cur >= abbrev_end) {
232				tprints("...");
233				break;
234			}
235			if (umoven(tcp, cur, sizeof(gid), &gid) < 0) {
236				tprints("?");
237				failed = 1;
238				break;
239			}
240			tprintf("%u", (unsigned int) gid);
241		}
242		tprints("]");
243		if (failed)
244			tprintf(" %#lx", tcp->u_arg[1]);
245	}
246	return 0;
247}
248
249#endif /* STRACE_UID_SIZE */
250