| /* Program name management. |
| Copyright (C) 2016-2019 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #include <config.h> |
| |
| /* Specification. */ |
| #include "getprogname.h" |
| |
| #include <errno.h> /* get program_invocation_name declaration */ |
| #include <stdlib.h> /* get __argv declaration */ |
| |
| #ifdef _AIX |
| # include <unistd.h> |
| # include <procinfo.h> |
| # include <string.h> |
| #endif |
| |
| #ifdef __MVS__ |
| # ifndef _OPEN_SYS |
| # define _OPEN_SYS |
| # endif |
| # include <string.h> |
| # include <sys/ps.h> |
| #endif |
| |
| #ifdef __hpux |
| # include <unistd.h> |
| # include <sys/param.h> |
| # include <sys/pstat.h> |
| # include <string.h> |
| #endif |
| |
| #ifdef __sgi |
| # include <string.h> |
| # include <unistd.h> |
| # include <stdio.h> |
| # include <fcntl.h> |
| # include <sys/procfs.h> |
| #endif |
| |
| #include "dirname.h" |
| |
| #ifndef HAVE_GETPROGNAME /* not Mac OS X, FreeBSD, NetBSD, OpenBSD >= 5.4, Cygwin */ |
| char const * |
| getprogname (void) |
| { |
| # if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME /* glibc, BeOS */ |
| /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */ |
| return program_invocation_short_name; |
| # elif HAVE_DECL_PROGRAM_INVOCATION_NAME /* glibc, BeOS */ |
| /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */ |
| return last_component (program_invocation_name); |
| # elif HAVE_GETEXECNAME /* Solaris */ |
| /* https://docs.oracle.com/cd/E19253-01/816-5168/6mbb3hrb1/index.html */ |
| const char *p = getexecname (); |
| if (!p) |
| p = "?"; |
| return last_component (p); |
| # elif HAVE_DECL___ARGV /* mingw, MSVC */ |
| /* https://docs.microsoft.com/en-us/cpp/c-runtime-library/argc-argv-wargv */ |
| const char *p = __argv && __argv[0] ? __argv[0] : "?"; |
| return last_component (p); |
| # elif HAVE_VAR___PROGNAME /* OpenBSD, Android, QNX */ |
| /* https://man.openbsd.org/style.9 */ |
| /* http://www.qnx.de/developers/docs/6.5.0/index.jsp?topic=%2Fcom.qnx.doc.neutrino_lib_ref%2Fp%2F__progname.html */ |
| /* Be careful to declare this only when we absolutely need it |
| (OpenBSD 5.1), rather than when it's available. Otherwise, |
| its mere declaration makes program_invocation_short_name |
| malfunction (have zero length) with Fedora 25's glibc. */ |
| extern char *__progname; |
| const char *p = __progname; |
| # if defined __ANDROID__ |
| return last_component (p); |
| # else |
| return p && p[0] ? p : "?"; |
| # endif |
| # elif _AIX /* AIX */ |
| /* Idea by Bastien ROUCARIÈS, |
| https://lists.gnu.org/r/bug-gnulib/2010-12/msg00095.html |
| Reference: https://www.ibm.com/support/knowledgecenter/en/ssw_aix_61/com.ibm.aix.basetrf1/getprocs.htm |
| */ |
| static char *p; |
| static int first = 1; |
| if (first) |
| { |
| first = 0; |
| pid_t pid = getpid (); |
| struct procentry64 procs; |
| p = (0 < getprocs64 (&procs, sizeof procs, NULL, 0, &pid, 1) |
| ? strdup (procs.pi_comm) |
| : NULL); |
| if (!p) |
| p = "?"; |
| } |
| return p; |
| # elif defined __hpux |
| static char *p; |
| static int first = 1; |
| if (first) |
| { |
| first = 0; |
| pid_t pid = getpid (); |
| struct pst_status status; |
| if (pstat_getproc (&status, sizeof status, 0, pid) > 0) |
| { |
| char *ucomm = status.pst_ucomm; |
| char *cmd = status.pst_cmd; |
| if (strlen (ucomm) < PST_UCOMMLEN - 1) |
| p = ucomm; |
| else |
| { |
| /* ucomm is truncated to length PST_UCOMMLEN - 1. |
| Look at cmd instead. */ |
| char *space = strchr (cmd, ' '); |
| if (space != NULL) |
| *space = '\0'; |
| p = strrchr (cmd, '/'); |
| if (p != NULL) |
| p++; |
| else |
| p = cmd; |
| if (strlen (p) > PST_UCOMMLEN - 1 |
| && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0) |
| /* p is less truncated than ucomm. */ |
| ; |
| else |
| p = ucomm; |
| } |
| p = strdup (p); |
| } |
| else |
| { |
| # if !defined __LP64__ |
| /* Support for 32-bit programs running in 64-bit HP-UX. |
| The documented way to do this is to use the same source code |
| as above, but in a compilation unit where '#define _PSTAT64 1' |
| is in effect. I prefer a single compilation unit; the struct |
| size and the offsets are not going to change. */ |
| char status64[1216]; |
| if (__pstat_getproc64 (status64, sizeof status64, 0, pid) > 0) |
| { |
| char *ucomm = status64 + 288; |
| char *cmd = status64 + 168; |
| if (strlen (ucomm) < PST_UCOMMLEN - 1) |
| p = ucomm; |
| else |
| { |
| /* ucomm is truncated to length PST_UCOMMLEN - 1. |
| Look at cmd instead. */ |
| char *space = strchr (cmd, ' '); |
| if (space != NULL) |
| *space = '\0'; |
| p = strrchr (cmd, '/'); |
| if (p != NULL) |
| p++; |
| else |
| p = cmd; |
| if (strlen (p) > PST_UCOMMLEN - 1 |
| && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0) |
| /* p is less truncated than ucomm. */ |
| ; |
| else |
| p = ucomm; |
| } |
| p = strdup (p); |
| } |
| else |
| # endif |
| p = NULL; |
| } |
| if (!p) |
| p = "?"; |
| } |
| return p; |
| # elif __MVS__ /* z/OS */ |
| /* https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.bpxbd00/rtwgetp.htm */ |
| static char *p = "?"; |
| static int first = 1; |
| if (first) |
| { |
| pid_t pid = getpid (); |
| int token; |
| W_PSPROC buf; |
| first = 0; |
| memset (&buf, 0, sizeof(buf)); |
| buf.ps_cmdptr = (char *) malloc (buf.ps_cmdlen = PS_CMDBLEN_LONG); |
| buf.ps_conttyptr = (char *) malloc (buf.ps_conttylen = PS_CONTTYBLEN); |
| buf.ps_pathptr = (char *) malloc (buf.ps_pathlen = PS_PATHBLEN); |
| if (buf.ps_cmdptr && buf.ps_conttyptr && buf.ps_pathptr) |
| { |
| for (token = 0; token >= 0; |
| token = w_getpsent (token, &buf, sizeof(buf))) |
| { |
| if (token > 0 && buf.ps_pid == pid) |
| { |
| char *s = strdup (last_component (buf.ps_pathptr)); |
| if (s) |
| p = s; |
| break; |
| } |
| } |
| } |
| free (buf.ps_cmdptr); |
| free (buf.ps_conttyptr); |
| free (buf.ps_pathptr); |
| } |
| return p; |
| # elif defined __sgi /* IRIX */ |
| char filename[50]; |
| int fd; |
| |
| sprintf (filename, "/proc/pinfo/%d", (int) getpid ()); |
| fd = open (filename, O_RDONLY); |
| if (0 <= fd) |
| { |
| prpsinfo_t buf; |
| int ioctl_ok = 0 <= ioctl (fd, PIOCPSINFO, &buf); |
| close (fd); |
| if (ioctl_ok) |
| { |
| char *name = buf.pr_fname; |
| size_t namesize = sizeof buf.pr_fname; |
| char *namenul = memchr (name, '\0', namesize); |
| size_t namelen = namenul ? namenul - name : namesize; |
| char *namecopy = malloc (namelen + 1); |
| if (namecopy) |
| { |
| namecopy[namelen] = 0; |
| return memcpy (namecopy, name, namelen); |
| } |
| } |
| } |
| return NULL; |
| # else |
| # error "getprogname module not ported to this OS" |
| # endif |
| } |
| |
| #endif |
| |
| /* |
| * Hey Emacs! |
| * Local Variables: |
| * coding: utf-8 |
| * End: |
| */ |