Introduce getprogname(3) and setprogname(3) library calls. These get
and set __progname, respectively. Discussed on: -arch (Feb 2001), -audit Reviewed by: -audit Approved by: kris Obtained from: (mostly) NetBSD
This commit is contained in:
Dima Dorfman
parent
54570134fe
commit
cd18ccdc30
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=76653
@ -157,6 +157,8 @@ int cgetustr __P((char *, char *, char **));
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int daemon __P((int, int));
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char *devname __P((int, int));
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int getloadavg __P((double [], int));
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const char *
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getprogname __P((void));
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char *group_from_gid __P((unsigned long, int));
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int heapsort __P((void *, size_t, size_t,
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@ -172,6 +174,7 @@ int rand_r __P((unsigned *));
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long random __P((void));
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void *reallocf __P((void *, size_t));
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char *realpath __P((const char *, char resolved_path[]));
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void setprogname __P((const char *));
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char *setstate __P((char *));
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void srandom __P((unsigned long));
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void sranddev __P((void));
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@ -13,7 +13,7 @@ SRCS+= __xuname.c _pthread_stubs.c _rand48.c _spinlock_stub.c _thread_init.c \
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getcap.c getcwd.c getdomainname.c getgrent.c getgrouplist.c \
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gethostname.c getloadavg.c getlogin.c getmntinfo.c getnetgrent.c \
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getobjformat.c getosreldate.c getpagesize.c \
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getpass.c getpwent.c getttyent.c \
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getpass.c getprogname.c getpwent.c getttyent.c \
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getusershell.c getvfsbyname.c getvfsent.c glob.c \
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initgroups.c isatty.c jrand48.c lcong48.c \
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lockf.c lrand48.c mrand48.c msgctl.c \
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@ -22,7 +22,8 @@ SRCS+= __xuname.c _pthread_stubs.c _rand48.c _spinlock_stub.c _thread_init.c \
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pause.c popen.c psignal.c pw_scan.c pwcache.c raise.c readdir.c rewinddir.c \
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posixshm.c \
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scandir.c seed48.c seekdir.c semconfig.c semctl.c semget.c semop.c \
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setdomainname.c sethostname.c setjmperr.c setmode.c setproctitle.c \
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setdomainname.c sethostname.c setjmperr.c setmode.c setprogname.c \
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setproctitle.c \
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shmat.c shmctl.c shmdt.c shmget.c siginterrupt.c siglist.c signal.c \
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sigsetops.c sleep.c srand48.c stringlist.c strtofflags.c \
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sysconf.c sysctl.c sysctlbyname.c sysctlnametomib.c \
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@ -43,7 +44,7 @@ MAN+= alarm.3 arc4random.3 clock.3 \
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getdiskbyname.3 getdomainname.3 getfsent.3 \
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getgrent.3 getgrouplist.3 gethostname.3 getloadavg.3 \
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getmntinfo.3 getnetgrent.3 getobjformat.3 \
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getpagesize.3 getpass.3 getpwent.3 \
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getpagesize.3 getpass.3 getprogname.3 getpwent.3 \
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getttyent.3 getusershell.3 getvfsbyname.3 getvfsent.3 \
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glob.3 initgroups.3 isinf.3 \
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ldexp.3 lockf.3 modf.3 msgctl.3 msgget.3 msgrcv.3 msgsnd.3 \
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@ -82,6 +83,7 @@ MLINKS+=getgrent.3 endgrent.3 getgrent.3 getgrgid.3 getgrent.3 getgrnam.3 \
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MLINKS+=gethostname.3 sethostname.3
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MLINKS+=getnetgrent.3 endnetgrent.3 getnetgrent.3 innetgr.3 \
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getnetgrent.3 setnetgrent.3
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MLINKS+=getprogname.3 setprogname.3
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MLINKS+=getpwent.3 endpwent.3 getpwent.3 getpwnam.3 getpwent.3 getpwuid.3 \
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getpwent.3 setpassent.3 getpwent.3 setpwent.3 getpwent.3 setpwfile.3
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MLINKS+=getttyent.3 endttyent.3 getttyent.3 getttynam.3 \
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92
lib/libc/gen/getprogname.3
Normal file
92
lib/libc/gen/getprogname.3
Normal file
@ -0,0 +1,92 @@
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.\"
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.\" Copyright (c) 2001 Christopher G. Demetriou
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed for the
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.\" NetBSD Project. See http://www.netbsd.org/ for
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.\" information about NetBSD.
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 1, 2001
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.Dt GETPROGNAME 3
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.Os
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.Sh NAME
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.Nm getprogname ,
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.Nm setprogname
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.Nd get or set the program name
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.Fd #include <stdlib.h>
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.Ft const char *
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.Fn getprogname "void"
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.Ft void
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.Fn setprogname "const char *progname"
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.Sh DESCRIPTION
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The
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.Fn getprogname
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and
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.Fn setprogname
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functions manipulate the name of the current program.
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They are used by error-reporting routines to produce
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consistent output.
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.Pp
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The
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.Fn getprogname
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function returns the name of the program.
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If the name has not been set yet, it will return
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.Dv NULL .
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.Pp
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The
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.Fn setprogname
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function sets the name of the program.
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Since a pointer to the given string is kept as the program name,
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it should not be modified for the rest of the program's lifetime.
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.Pp
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In
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.Fx ,
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the name of the program is set by the start-up code that is run before
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.Fn main ;
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thus,
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running
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.Fn setprogname
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is not necessary.
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Programs that desire maximum portability should still call it;
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on another operating system,
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these functions may be implemented in a portability library.
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Calling
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.Fn setprogname
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allows the aforementioned library to learn the program name without
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modifications to the start-up code.
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.Sh SEE ALSO
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.Xr err 3 ,
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.Xr setproctitle 3
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.Sh HISTORY
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These functions first appeared in
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.Nx 1.6 ,
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and made their way into
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.Fx 5.0 .
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13
lib/libc/gen/getprogname.c
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13
lib/libc/gen/getprogname.c
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@ -0,0 +1,13 @@
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#if defined(LIBC_RCS) && !defined(lint)
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* LIBC_RCS and not lint */
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extern const char *__progname;
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const char *
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getprogname(void)
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{
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return (__progname);
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}
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13
lib/libc/gen/setprogname.c
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13
lib/libc/gen/setprogname.c
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@ -0,0 +1,13 @@
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#if defined(LIBC_RCS) && !defined(lint)
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* LIBC_RCS and not lint */
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extern const char *__progname;
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void
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setprogname(const char *progname)
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{
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__progname = progname;
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}
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