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6ec2e0f5 | 1 | /* Program name management. |
9c9d63b1 | 2 | Copyright (C) 2016-2021 Free Software Foundation, Inc. |
6ec2e0f5 SDJ |
3 | |
4 | This program is free software: you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
c0c3707f | 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
6ec2e0f5 SDJ |
16 | |
17 | #include <config.h> | |
18 | ||
19 | /* Specification. */ | |
20 | #include "getprogname.h" | |
21 | ||
22 | #include <errno.h> /* get program_invocation_name declaration */ | |
23 | #include <stdlib.h> /* get __argv declaration */ | |
24 | ||
25 | #ifdef _AIX | |
26 | # include <unistd.h> | |
27 | # include <procinfo.h> | |
28 | # include <string.h> | |
29 | #endif | |
30 | ||
31 | #ifdef __MVS__ | |
32 | # ifndef _OPEN_SYS | |
33 | # define _OPEN_SYS | |
34 | # endif | |
35 | # include <string.h> | |
36 | # include <sys/ps.h> | |
37 | #endif | |
38 | ||
39 | #ifdef __hpux | |
40 | # include <unistd.h> | |
41 | # include <sys/param.h> | |
42 | # include <sys/pstat.h> | |
43 | # include <string.h> | |
44 | #endif | |
45 | ||
c0c3707f CB |
46 | #ifdef __sgi |
47 | # include <string.h> | |
48 | # include <unistd.h> | |
49 | # include <stdio.h> | |
50 | # include <fcntl.h> | |
51 | # include <sys/procfs.h> | |
52 | #endif | |
53 | ||
9c9d63b1 PM |
54 | #if defined __SCO_VERSION__ || defined __sysv5__ |
55 | # include <fcntl.h> | |
56 | # include <stdlib.h> | |
57 | # include <string.h> | |
58 | #endif | |
59 | ||
60 | #include "basename-lgpl.h" | |
6ec2e0f5 SDJ |
61 | |
62 | #ifndef HAVE_GETPROGNAME /* not Mac OS X, FreeBSD, NetBSD, OpenBSD >= 5.4, Cygwin */ | |
63 | char const * | |
64 | getprogname (void) | |
65 | { | |
66 | # if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME /* glibc, BeOS */ | |
67 | /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */ | |
68 | return program_invocation_short_name; | |
69 | # elif HAVE_DECL_PROGRAM_INVOCATION_NAME /* glibc, BeOS */ | |
70 | /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */ | |
71 | return last_component (program_invocation_name); | |
72 | # elif HAVE_GETEXECNAME /* Solaris */ | |
c0c3707f | 73 | /* https://docs.oracle.com/cd/E19253-01/816-5168/6mbb3hrb1/index.html */ |
6ec2e0f5 SDJ |
74 | const char *p = getexecname (); |
75 | if (!p) | |
76 | p = "?"; | |
77 | return last_component (p); | |
78 | # elif HAVE_DECL___ARGV /* mingw, MSVC */ | |
c0c3707f | 79 | /* https://docs.microsoft.com/en-us/cpp/c-runtime-library/argc-argv-wargv */ |
6ec2e0f5 SDJ |
80 | const char *p = __argv && __argv[0] ? __argv[0] : "?"; |
81 | return last_component (p); | |
c0c3707f CB |
82 | # elif HAVE_VAR___PROGNAME /* OpenBSD, Android, QNX */ |
83 | /* https://man.openbsd.org/style.9 */ | |
6ec2e0f5 SDJ |
84 | /* http://www.qnx.de/developers/docs/6.5.0/index.jsp?topic=%2Fcom.qnx.doc.neutrino_lib_ref%2Fp%2F__progname.html */ |
85 | /* Be careful to declare this only when we absolutely need it | |
86 | (OpenBSD 5.1), rather than when it's available. Otherwise, | |
87 | its mere declaration makes program_invocation_short_name | |
88 | malfunction (have zero length) with Fedora 25's glibc. */ | |
89 | extern char *__progname; | |
90 | const char *p = __progname; | |
c0c3707f CB |
91 | # if defined __ANDROID__ |
92 | return last_component (p); | |
93 | # else | |
6ec2e0f5 | 94 | return p && p[0] ? p : "?"; |
c0c3707f | 95 | # endif |
6ec2e0f5 SDJ |
96 | # elif _AIX /* AIX */ |
97 | /* Idea by Bastien ROUCARIÈS, | |
c0c3707f CB |
98 | https://lists.gnu.org/r/bug-gnulib/2010-12/msg00095.html |
99 | Reference: https://www.ibm.com/support/knowledgecenter/en/ssw_aix_61/com.ibm.aix.basetrf1/getprocs.htm | |
6ec2e0f5 SDJ |
100 | */ |
101 | static char *p; | |
102 | static int first = 1; | |
103 | if (first) | |
104 | { | |
105 | first = 0; | |
106 | pid_t pid = getpid (); | |
107 | struct procentry64 procs; | |
108 | p = (0 < getprocs64 (&procs, sizeof procs, NULL, 0, &pid, 1) | |
109 | ? strdup (procs.pi_comm) | |
110 | : NULL); | |
111 | if (!p) | |
112 | p = "?"; | |
113 | } | |
114 | return p; | |
115 | # elif defined __hpux | |
116 | static char *p; | |
117 | static int first = 1; | |
118 | if (first) | |
119 | { | |
120 | first = 0; | |
121 | pid_t pid = getpid (); | |
122 | struct pst_status status; | |
c0c3707f CB |
123 | if (pstat_getproc (&status, sizeof status, 0, pid) > 0) |
124 | { | |
125 | char *ucomm = status.pst_ucomm; | |
126 | char *cmd = status.pst_cmd; | |
127 | if (strlen (ucomm) < PST_UCOMMLEN - 1) | |
128 | p = ucomm; | |
129 | else | |
130 | { | |
131 | /* ucomm is truncated to length PST_UCOMMLEN - 1. | |
132 | Look at cmd instead. */ | |
133 | char *space = strchr (cmd, ' '); | |
134 | if (space != NULL) | |
135 | *space = '\0'; | |
136 | p = strrchr (cmd, '/'); | |
137 | if (p != NULL) | |
138 | p++; | |
139 | else | |
140 | p = cmd; | |
141 | if (strlen (p) > PST_UCOMMLEN - 1 | |
142 | && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0) | |
143 | /* p is less truncated than ucomm. */ | |
144 | ; | |
145 | else | |
146 | p = ucomm; | |
147 | } | |
148 | p = strdup (p); | |
149 | } | |
150 | else | |
151 | { | |
152 | # if !defined __LP64__ | |
153 | /* Support for 32-bit programs running in 64-bit HP-UX. | |
154 | The documented way to do this is to use the same source code | |
155 | as above, but in a compilation unit where '#define _PSTAT64 1' | |
156 | is in effect. I prefer a single compilation unit; the struct | |
157 | size and the offsets are not going to change. */ | |
158 | char status64[1216]; | |
159 | if (__pstat_getproc64 (status64, sizeof status64, 0, pid) > 0) | |
160 | { | |
161 | char *ucomm = status64 + 288; | |
162 | char *cmd = status64 + 168; | |
163 | if (strlen (ucomm) < PST_UCOMMLEN - 1) | |
164 | p = ucomm; | |
165 | else | |
166 | { | |
167 | /* ucomm is truncated to length PST_UCOMMLEN - 1. | |
168 | Look at cmd instead. */ | |
169 | char *space = strchr (cmd, ' '); | |
170 | if (space != NULL) | |
171 | *space = '\0'; | |
172 | p = strrchr (cmd, '/'); | |
173 | if (p != NULL) | |
174 | p++; | |
175 | else | |
176 | p = cmd; | |
177 | if (strlen (p) > PST_UCOMMLEN - 1 | |
178 | && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0) | |
179 | /* p is less truncated than ucomm. */ | |
180 | ; | |
181 | else | |
182 | p = ucomm; | |
183 | } | |
184 | p = strdup (p); | |
185 | } | |
186 | else | |
187 | # endif | |
188 | p = NULL; | |
189 | } | |
6ec2e0f5 SDJ |
190 | if (!p) |
191 | p = "?"; | |
192 | } | |
193 | return p; | |
194 | # elif __MVS__ /* z/OS */ | |
195 | /* https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.bpxbd00/rtwgetp.htm */ | |
196 | static char *p = "?"; | |
197 | static int first = 1; | |
198 | if (first) | |
199 | { | |
200 | pid_t pid = getpid (); | |
201 | int token; | |
202 | W_PSPROC buf; | |
203 | first = 0; | |
204 | memset (&buf, 0, sizeof(buf)); | |
205 | buf.ps_cmdptr = (char *) malloc (buf.ps_cmdlen = PS_CMDBLEN_LONG); | |
206 | buf.ps_conttyptr = (char *) malloc (buf.ps_conttylen = PS_CONTTYBLEN); | |
207 | buf.ps_pathptr = (char *) malloc (buf.ps_pathlen = PS_PATHBLEN); | |
208 | if (buf.ps_cmdptr && buf.ps_conttyptr && buf.ps_pathptr) | |
209 | { | |
210 | for (token = 0; token >= 0; | |
211 | token = w_getpsent (token, &buf, sizeof(buf))) | |
212 | { | |
213 | if (token > 0 && buf.ps_pid == pid) | |
214 | { | |
215 | char *s = strdup (last_component (buf.ps_pathptr)); | |
216 | if (s) | |
217 | p = s; | |
218 | break; | |
219 | } | |
220 | } | |
221 | } | |
222 | free (buf.ps_cmdptr); | |
223 | free (buf.ps_conttyptr); | |
224 | free (buf.ps_pathptr); | |
225 | } | |
226 | return p; | |
c0c3707f CB |
227 | # elif defined __sgi /* IRIX */ |
228 | char filename[50]; | |
229 | int fd; | |
230 | ||
231 | sprintf (filename, "/proc/pinfo/%d", (int) getpid ()); | |
698be2d8 | 232 | fd = open (filename, O_RDONLY | O_CLOEXEC); |
c0c3707f CB |
233 | if (0 <= fd) |
234 | { | |
235 | prpsinfo_t buf; | |
236 | int ioctl_ok = 0 <= ioctl (fd, PIOCPSINFO, &buf); | |
237 | close (fd); | |
238 | if (ioctl_ok) | |
239 | { | |
240 | char *name = buf.pr_fname; | |
241 | size_t namesize = sizeof buf.pr_fname; | |
242 | /* It may not be NUL-terminated. */ | |
243 | char *namenul = memchr (name, '\0', namesize); | |
244 | size_t namelen = namenul ? namenul - name : namesize; | |
245 | char *namecopy = malloc (namelen + 1); | |
246 | if (namecopy) | |
247 | { | |
248 | namecopy[namelen] = '\0'; | |
249 | return memcpy (namecopy, name, namelen); | |
250 | } | |
251 | } | |
252 | } | |
253 | return NULL; | |
9c9d63b1 PM |
254 | # elif defined __SCO_VERSION__ || defined __sysv5__ /* SCO OpenServer6/UnixWare */ |
255 | char buf[80]; | |
256 | int fd; | |
257 | sprintf (buf, "/proc/%d/cmdline", getpid()); | |
258 | fd = open (buf, O_RDONLY); | |
259 | if (0 <= fd) | |
260 | { | |
261 | size_t n = read (fd, buf, 79); | |
262 | if (n > 0) | |
263 | { | |
264 | buf[n] = '\0'; /* Guarantee null-termination */ | |
265 | char *progname; | |
266 | progname = strrchr (buf, '/'); | |
267 | if (progname) | |
268 | { | |
269 | progname = progname + 1; /* Skip the '/' */ | |
270 | } | |
271 | else | |
272 | { | |
273 | progname = buf; | |
274 | } | |
275 | char *ret; | |
276 | ret = malloc (strlen (progname) + 1); | |
277 | if (ret) | |
278 | { | |
279 | strcpy (ret, progname); | |
280 | return ret; | |
281 | } | |
282 | } | |
283 | close (fd); | |
284 | } | |
285 | return "?"; | |
6ec2e0f5 SDJ |
286 | # else |
287 | # error "getprogname module not ported to this OS" | |
288 | # endif | |
289 | } | |
290 | ||
291 | #endif | |
c0c3707f CB |
292 | |
293 | /* | |
294 | * Hey Emacs! | |
295 | * Local Variables: | |
296 | * coding: utf-8 | |
297 | * End: | |
298 | */ |