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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:16:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:16:24 +0000 |
commit | 9221dca64f0c8b5de72727491e41cf63e902eaab (patch) | |
tree | d8cbbf520eb4b5c656a54b2e36947008dcb751ad /gl/lib/getprogname.c | |
parent | Initial commit. (diff) | |
download | man-db-9221dca64f0c8b5de72727491e41cf63e902eaab.tar.xz man-db-9221dca64f0c8b5de72727491e41cf63e902eaab.zip |
Adding upstream version 2.8.5.upstream/2.8.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | gl/lib/getprogname.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/gl/lib/getprogname.c b/gl/lib/getprogname.c new file mode 100644 index 0000000..96fa759 --- /dev/null +++ b/gl/lib/getprogname.c @@ -0,0 +1,255 @@ +/* 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://msdn.microsoft.com/en-us/library/dn727674.aspx */ + const char *p = __argv && __argv[0] ? __argv[0] : "?"; + return last_component (p); +# elif HAVE_VAR___PROGNAME /* OpenBSD, 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; + return p && p[0] ? p : "?"; +# 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: + */ |