2 * Copyright (c) 2011 Mikolaj Golub
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
31 #include <sys/sysctl.h>
38 #include <libprocstat.h>
46 #define PROC_AUXV_MAX 256
48 static Elf_Auxinfo auxv[PROC_AUXV_MAX];
49 static char prefix[256];
51 #if __ELF_WORD_SIZE == 64
52 static Elf32_Auxinfo auxv32[PROC_AUXV_MAX];
54 static const char *elf32_sv_names[] = {
64 static char sv_name[256];
68 name[2] = KERN_PROC_SV_NAME;
70 len = sizeof(sv_name);
71 error = sysctl(name, 4, sv_name, &len, NULL, 0);
72 if (error != 0 || len == 0)
74 for (i = 0; i < sizeof(elf32_sv_names) / sizeof(*elf32_sv_names); i++) {
75 if (strncmp(sv_name, elf32_sv_names[i], sizeof(sv_name)) == 0)
82 retrieve_auxv32(pid_t pid)
90 name[2] = KERN_PROC_AUXV;
93 if (sysctl(name, 4, auxv32, &len, NULL, 0) == -1) {
94 if (errno != ESRCH && errno != EPERM)
95 warn("sysctl: kern.proc.auxv: %d: %d", pid, errno);
98 for (i = 0; i < len; i++) {
100 * XXX: We expect that values for a_type on a 32-bit platform
101 * are directly mapped to those on 64-bit one, which is not
104 auxv[i].a_type = auxv32[i].a_type;
105 ptr = &auxv32[i].a_un;
106 auxv[i].a_un.a_val = *((uint32_t *)ptr);
110 #endif /* __ELF_WORD_SIZE == 64 */
112 #define PRINT(name, spec, val) \
113 printf("%s %-16s " #spec "\n", prefix, #name, (val))
114 #define PRINT_UNKNOWN(type, val) \
115 printf("%s %16ld %#lx\n", prefix, (long)type, (u_long)(val))
118 retrieve_auxv(pid_t pid)
123 #if __ELF_WORD_SIZE == 64
125 return (retrieve_auxv32(pid));
129 name[2] = KERN_PROC_AUXV;
132 if (sysctl(name, 4, auxv, &len, NULL, 0) == -1) {
133 if (errno != ESRCH && errno != EPERM)
134 warn("sysctl: kern.proc.auxv: %d: %d", pid, errno);
141 procstat_auxv(struct kinfo_proc *kipp)
146 printf("%5s %-16s %-16s %-16s\n", "PID", "COMM", "AUXV", "VALUE");
147 len = retrieve_auxv(kipp->ki_pid);
150 snprintf(prefix, sizeof(prefix), "%5d %-16s", kipp->ki_pid,
152 for (i = 0; i < len; i++) {
153 switch(auxv[i].a_type) {
159 PRINT(AT_EXECFD, %ld, (long)auxv[i].a_un.a_val);
162 PRINT(AT_PHDR, %p, auxv[i].a_un.a_ptr);
165 PRINT(AT_PHENT, %ld, (long)auxv[i].a_un.a_val);
168 PRINT(AT_PHNUM, %ld, (long)auxv[i].a_un.a_val);
171 PRINT(AT_PAGESZ, %ld, (long)auxv[i].a_un.a_val);
174 PRINT(AT_BASE, %p, auxv[i].a_un.a_ptr);
177 PRINT(AT_FLAGS, %#lx, (u_long)auxv[i].a_un.a_val);
180 PRINT(AT_ENTRY, %p, auxv[i].a_un.a_ptr);
184 PRINT(AT_NOTELF, %ld, (long)auxv[i].a_un.a_val);
189 PRINT(AT_UID, %ld, (long)auxv[i].a_un.a_val);
194 PRINT(AT_EUID, %ld, (long)auxv[i].a_un.a_val);
199 PRINT(AT_GID, %ld, (long)auxv[i].a_un.a_val);
204 PRINT(AT_EGID, %ld, (long)auxv[i].a_un.a_val);
208 PRINT(AT_EXECPATH, %p, auxv[i].a_un.a_ptr);
211 PRINT(AT_CANARY, %p, auxv[i].a_un.a_ptr);
214 PRINT(AT_CANARYLEN, %ld, (long)auxv[i].a_un.a_val);
217 PRINT(AT_OSRELDATE, %ld, (long)auxv[i].a_un.a_val);
220 PRINT(AT_NCPUS, %ld, (long)auxv[i].a_un.a_val);
223 PRINT(AT_PAGESIZES, %p, auxv[i].a_un.a_ptr);
225 case AT_PAGESIZESLEN:
226 PRINT(AT_PAGESIZESLEN, %ld, (long)auxv[i].a_un.a_val);
229 if ((auxv[i].a_un.a_val & VM_PROT_EXECUTE) != 0)
230 PRINT(AT_STACKPROT, %s, "NONEXECUTABLE");
232 PRINT(AT_STACKPROT, %s, "EXECUTABLE");
235 PRINT(AT_COUNT, %ld, (long)auxv[i].a_un.a_val);
238 PRINT_UNKNOWN(auxv[i].a_type, auxv[i].a_un.a_val);