diff options
Diffstat (limited to '')
| -rw-r--r-- | .gitignore | 14 | ||||
| -rw-r--r-- | COPYING | 16 | ||||
| -rw-r--r-- | LICENSE | 683 | ||||
| -rw-r--r-- | Makefile | 122 | ||||
| -rw-r--r-- | README | 21 | ||||
| -rw-r--r-- | arg.h | 45 | ||||
| -rw-r--r-- | config.mk | 6 | ||||
| -rw-r--r-- | getpgrp.1 | 89 | ||||
| -rw-r--r-- | getpgrp.c | 34 | ||||
| -rw-r--r-- | setpgrp.1 | 142 | ||||
| -rw-r--r-- | setpgrp.c | 82 | ||||
| -rw-r--r-- | src/getpgrp.c | 28 | ||||
| -rw-r--r-- | src/setpgrp.c | 98 |
13 files changed, 460 insertions, 920 deletions
@@ -1,14 +1,6 @@ -_/ -bin/ -obj/ -\#*\# -.* +*\# *~ -!.git* -*.sw[op] -*.bak *.o -*.out *.su -*.gch - +/getpgrp +/setpgrp diff --git a/COPYING b/COPYING deleted file mode 100644 index b4b0d6e..0000000 --- a/COPYING +++ /dev/null @@ -1,16 +0,0 @@ -setpgrep — run a program in a new process group -Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) - -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 <http://www.gnu.org/licenses/>. - @@ -1,674 +1,15 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 +ISC License - Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. +© 2014, 2021 Mattias Andrée <maandree@kth.se> - Preamble +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted, provided that the above +copyright notice and this permission notice appear in all copies. - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -<http://www.gnu.org/licenses/>. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -<http://www.gnu.org/philosophy/why-not-lgpl.html>. +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. @@ -1,108 +1,40 @@ -# Copying and distribution of this file, with or without modification, -# are permitted in any medium without royalty provided the copyright -# notice and this notice are preserved. This file is offered as-is, -# without any warranty. +.POSIX: +CONFIGFILE = config.mk +include $(CONFIGFILE) -# The package path prefix, if you want to install to another root, set DESTDIR to that root. -PREFIX ?= /usr -# The command path excluding prefix. -BIN ?= /bin -# The library path excluding prefix. -LIB ?= /lib -# The executable library path excluding prefix. -LIBEXEC ?= /libexec -# The resource path excluding prefix. -DATA ?= /share -# The command path including prefix. -BINDIR ?= $(PREFIX)$(BIN) -# The library path including prefix. -LIBDIR ?= $(PREFIX)$(LIB) -# The executable library path including prefix. -LIBEXECDIR ?= $(PREFIX)$(LIBEXEC) -# The resource path including prefix. -DATADIR ?= $(PREFIX)$(DATA) -# The generic documentation path including prefix. -DOCDIR ?= $(DATADIR)/doc -# The info manual documentation path including prefix. -INFODIR ?= $(DATADIR)/info -# The license base path including prefix. -LICENSEDIR ?= $(DATADIR)/licenses +BIN = getpgrp setpgrp +OBJ = $(@:=.o) +MAN = $(@:=.1) +HDR = arg.h -# The name of the package as it should be installed. -PKGNAME ?= setpgrp +all: $(BIN) +$(OBJ): $(@:.o=.c) $(HDR) -# Optimisation level (and debug flags.) -OPTIMISE = -Og -g +getpgrp: getpgrp.o + $(CC) -o $@ $@.o $(LDFLAGS) -# Enabled Warnings. -WARN = -Wall -Wextra -pedantic -Wdouble-promotion -Wformat=2 -Winit-self \ - -Wmissing-include-dirs -Wtrampolines -Wfloat-equal -Wshadow \ - -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls \ - -Wnested-externs -Winline -Wno-variadic-macros -Wsign-conversion \ - -Wswitch-default -Wconversion -Wsync-nand -Wunsafe-loop-optimizations \ - -Wcast-align -Wstrict-overflow -Wdeclaration-after-statement -Wundef \ - -Wbad-function-cast -Wcast-qual -Wwrite-strings -Wlogical-op \ - -Waggregate-return -Wstrict-prototypes -Wold-style-definition -Wpacked \ - -Wvector-operation-performance -Wunsuffixed-float-constants \ - -Wsuggest-attribute=const -Wsuggest-attribute=noreturn \ - -Wsuggest-attribute=pure -Wsuggest-attribute=format -Wnormalized=nfkc +setpgrp: setpgrp.o + $(CC) -o $@ $@.o $(LDFLAGS) -# The C standard used in the code. -STD = gnu99 +.c.o: + $(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS) -# Options for the C compiler. -C_FLAGS = $(OPTIMISE) $(WARN) -std=$(STD) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) \ - -ftree-vrp -fstrict-aliasing -fipa-pure-const -fstack-usage \ - -fstrict-overflow -funsafe-loop-optimizations -fno-builtin +install: $(BIN) + mkdir -p -- "$(DESTDIR)$(PREFIX)/bin" + mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1" + cp -- $(BIN) "$(DESTDIR)$(PREFIX)/bin/" + cp -- $(MAN) "$(DESTDIR)$(MANPREFIX)/man1/" - - -.PHONY: all -all: getpgrp setpgrp - -.PHONY: getpgrp setpgrp -getpgrp: bin/getpgrp -setpgrp: bin/setpgrp - -bin/%: src/%.c - @mkdir -p bin - $(CC) $(C_FLAGS) -o $@ $^ - - -.PHONY: install -install: install-commands install-license - -.PHONY: install-commands -install-commands: install-getpgrp install-setpgrp - -.PHONY: install-getpgrp -install-getpgrp: bin/getpgrp - install -dm755 -- "$(DESTDIR)$(BINDIR)" - install -m755 $< -- "$(DESTDIR)$(BINDIR)/getpgrp" - -.PHONY: install-setpgrp -install-setpgrp: bin/setpgrp - install -dm755 -- "$(DESTDIR)$(BINDIR)" - install -m755 $< -- "$(DESTDIR)$(BINDIR)/setpgrp" - -.PHONY: install-license -install-license: - install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 COPYING LICENSE -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - - -.PHONY: uninstall uninstall: - -rm -- "$(DESTDIR)$(BINDIR)/getpgrp" - -rm -- "$(DESTDIR)$(BINDIR)/setpgrp" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" - -rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - + -cd -- "$(DESTDIR)$(PREFIX)/bin/" && rm -f -- $(BIN) + -cd -- "$(DESTDIR)$(MANPREFIX)/man1/" && rm -f -- $(MAN) -.PHONY: clean clean: - -rm -r -- bin *.su + -rm -rf -- $(BIN) *.o *.su + +.SUFFIXES: +.SUFFIXES: .o .c +.PHONY: all install uninstall clean @@ -1,2 +1,21 @@ -Commands providing access to the setpgrp and getpgrp system calls. +NAME + setpgrp - run a process in a new process group + getpgrp - get the current process group +SYNOPSIS + setpgrp [-e variable] [-pv] command [argument] ... + + getpgrp + +DESCRIPTION + The setpgrp utility runs a command in a new process + group, and optionally exports that process group + identifier to a user-specified environment variable + and optionally prints that process group identifier + to the standard output. + + The getpgrp utility prints the identifier of the + current process group to the standard output. + +SEE ALSO + setpgid(2), getpgrp(2) @@ -0,0 +1,45 @@ +/* + * Copy me if you can. + * by 20h + */ + +#ifndef ARG_H__ +#define ARG_H__ + +extern char *argv0; + +/* use main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ + argv[0] && argv[0][0] && argv[0][1];\ + argc--, argv++) {\ + char argc_;\ + char **argv_;\ + int brk_;\ + if (argv[0][0] == '-') {\ + if (argv[0][1] == '-' && argv[0][2] == '\0') {\ + argv++;\ + argc--;\ + break;\ + }\ + for (brk_ = 0, argv[0]++, argv_ = argv;\ + argv[0][0] && !brk_;\ + argv[0]++) {\ + if (argv_ != argv)\ + break;\ + argc_ = argv[0][0];\ + switch (argc_) + +#define ARGEND }\ + } else {\ + break;\ + }\ + } + +#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ + ((x), abort(), (char *)0) :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + + +#endif diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..58c0906 --- /dev/null +++ b/config.mk @@ -0,0 +1,6 @@ +PREFIX = /usr +MANPREFIX = $(PREFIX)/share/man + +CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 +CFLAGS = -std=c99 -Wall +LDFLAGS = diff --git a/getpgrp.1 b/getpgrp.1 new file mode 100644 index 0000000..17b0c00 --- /dev/null +++ b/getpgrp.1 @@ -0,0 +1,89 @@ +.TH GETPGRP 1 getpgrp + +.SH NAME +getpgrp - get the current process group + +.SH SYNOPSIS +.B getpgrp + +.SH DESCRIPTION +The +.B getpgrp +utility prints the identifier of the +current process group to the standard output. + +.SH OPTIONS +The +.B getpgrp +utility conforms to the Base Definitions volume of POSIX.1-2017, +.IR "Section 12.2" , +.IR "Utility Syntax Guidelines" . +.PP +No options are supported. + +.SH OPERANDS +No operands are supported. + +.SH STDIN +Not used. + +.SH INPUT FILES +None. + +.SH ENVIRONMENT VARIABLES +No environment variables affects the execution of +.BR getpgrp . + +.SH ASYNCHRONOUS EVENTS +Default. + +.SH STDOUT +The +.B getpgrp +utility prints the identifier of it's process group +to the standard output. + +.SH STDERR +The standard error is used for diagnostic messages. + +.SH OUTPUT FILES +None. + +.SH EXTENDED DESCRIPTION +None. + +.SH EXIT STATUS +If the +.B getpgrp +exits with one of the following statuses: +.TP +0 +Successful. +.TP +1 +A error occurred. + +.SH CONSEQUENCES OF ERRORS +Default. + +.SH APPLICATION USAGE +None. + +.SH EXAMPLES +None. + +.SH RATIONALE +None. + +.SH NOTES +None. + +.SH BUGS +None. + +.SH FUTURE DIRECTIONS +None. + +.SH SEE ALSO +.BR getpgrp (2), +.BR setpgrp (1) diff --git a/getpgrp.c b/getpgrp.c new file mode 100644 index 0000000..f3e9c81 --- /dev/null +++ b/getpgrp.c @@ -0,0 +1,34 @@ +/* See LICENSE file for copyright and license details. */ +#include <errno.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "arg.h" + + +char *argv0; + +int +main(int argc, char *argv[]) +{ + ARGBEGIN { + default: + goto usage; + } ARGEND; + if (argc) + goto usage; + + printf("%ji\n", (intmax_t)getpgrp()); + if (fflush(stdout) || ferror(stdout) || fclose(stdout)) { + fprintf(stderr, "%s: printf: %s\n", argv0, strerror(errno)); + return 1; + } + + return 0; + +usage: + fprintf(stderr, "usage: %s\n", argv0); + return 1; +} diff --git a/setpgrp.1 b/setpgrp.1 new file mode 100644 index 0000000..2deb440 --- /dev/null +++ b/setpgrp.1 @@ -0,0 +1,142 @@ +.TH SETPGRP 1 setpgrp + +.SH NAME +setpgrp - run a process in a new process group + +.SH SYNOPSIS +.B setpgrp +[-e +.IR variable ] +[-pv] +.I command +.RI [ argument ]\ ... + +.SH DESCRIPTION +The +.B setpgrp +utility runs a command in a new process +group, and optionally exports that process group +identifier to a user-specified environment variable +and optionally prints that process group identifier +to the standard output. + +.SH OPTIONS +The +.B setpgrp +utility conforms to the Base Definitions volume of POSIX.1-2017, +.IR "Section 12.2" , +.IR "Utility Syntax Guidelines" . +.PP +The following option is supported: +.TP +.BI -e\ variable +Export the identifier of the new process group +to the specified environment +.IR variable . +.TP +.B -p +Print the identifier of the new process group +to the standard output. +.TP +.B -v +Print the identifier of the new process group +to the standard error as a normal diagnostic message. + +.SH OPERANDS +The following operands are supported: +.TP +.I command +The command that shall be run with as the root user. +This will be both the process image and the process's +zeroth command line argument. +.TP +.IR argument \ ... +Command line arguments for the command to run. + +.SH STDIN +The +.B setpgrp +utility does not use the standard input, however the +.I command +it starts may. + +.SH INPUT FILES +None. + +.SH ENVIRONMENT VARIABLES +The following environment variables affects the execution of +.BR setpgrp : +.TP +.SH PATH +Default. See to the Base Definitions volume of POSIX.1-2017, Section 8.3, Other Environment Variables. + +.SH ASYNCHRONOUS EVENTS +Default. + +.SH STDOUT +The +.B setpgrp +utility does not use the standard output unless the +.B -p +option is specified, however the +.I command +it starts may. + +.SH STDERR +The standard error is used for diagnostic messages and the +password prompt. The +.I command +the +.B setpgrp +utility starts may also use the standard error. + +.SH OUTPUT FILES +None. + +.SH EXTENDED DESCRIPTION +None. + +.SH EXIT STATUS +If the +.B setpgrp +utility fails it will exit withone of the following statuses: +.TP +125 +A error occurred. +.TP +126 +The process failed to change process image. +.TP +127 +The specified command was not found. +.PP +If the +.B setpgrp +utility is successful, the exit status is defined by the +.I command +it starts. + +.SH CONSEQUENCES OF ERRORS +Default. + +.SH APPLICATION USAGE +None. + +.SH EXAMPLES +None. + +.SH RATIONALE +None. + +.SH NOTES +None. + +.SH BUGS +None. + +.SH FUTURE DIRECTIONS +None. + +.SH SEE ALSO +.BR setpgid (2), +.BR getpgrp (1) diff --git a/setpgrp.c b/setpgrp.c new file mode 100644 index 0000000..1cb75fc --- /dev/null +++ b/setpgrp.c @@ -0,0 +1,82 @@ +/* See LICENSE file for copyright and license details. */ +#include <errno.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "arg.h" + +#define EXIT_ERROR 125 +#define EXIT_EXEC 126 +#define EXIT_NOENT 127 + + +char *argv0; + +static void +usage(void) +{ + fprintf(stderr, "usage: %s [-e variable] [-pv] command [argument] ...\n", argv0); + exit(EXIT_ERROR); +} + +int +main(int argc, char *argv[]) +{ + char group_str[3 * sizeof(pid_t) + 1]; + int print_to_stdout = 0; + int print_to_stderr = 0; + char *export = NULL; + pid_t group; + + ARGBEGIN { + case 'e': + export = EARGF(usage()); + if (!*export) + usage(); + break; + case 'p': + print_to_stdout = 1; + break; + case 'v': + print_to_stderr = 1; + break; + default: + usage(); + } ARGEND; + + if (!argc) + usage(); + + if (setpgid(0, 0)) { + fprintf(stderr, "%s: setpgid 0 0: %s\n", argv0, strerror(errno)); + return EXIT_ERROR; + } + group = getpgrp(); + + if (print_to_stdout) { + printf("%ji\n", (intmax_t)group); + if (fflush(stdout) || ferror(stdout)) { + fprintf(stderr, "%s: printf: %s\n", argv0, strerror(errno)); + return EXIT_ERROR; + } + } + + if (export) { + sprintf(group_str, "%ji", (intmax_t)group); + if (setenv(export, group_str, 1)) { + fprintf(stderr, "%s: setenv %s %s 1: %s\n", argv0, export, group_str, strerror(errno)); + return EXIT_ERROR; + } + } + + if (print_to_stderr) + fprintf(stderr, "%s: running %s in process group %ji\n", argv0, argv[0], (intmax_t)group); + + execvp(argv[0], argv); + fprintf(stderr, "%s: execvp %s: %s\n", argv0, argv[0], strerror(errno)); + return errno == ENOENT ? EXIT_NOENT : EXIT_EXEC; +} diff --git a/src/getpgrp.c b/src/getpgrp.c deleted file mode 100644 index 47dafcf..0000000 --- a/src/getpgrp.c +++ /dev/null @@ -1,28 +0,0 @@ -/** - * setpgrep — run a program in a new process group - * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) - * - * 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 <http://www.gnu.org/licenses/>. - */ -#include <unistd.h> -#include <stdio.h> -#include <stdint.h> - - -int main(void) -{ - pid_t group = getpgrp(); - return printf("%ji\n", (intmax_t)group) < 0; -} - diff --git a/src/setpgrp.c b/src/setpgrp.c deleted file mode 100644 index 0f76ea9..0000000 --- a/src/setpgrp.c +++ /dev/null @@ -1,98 +0,0 @@ -/** - * setpgrep — run a program in a new process group - * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) - * - * 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 <http://www.gnu.org/licenses/>. - */ -#include <unistd.h> -#include <stdio.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <stddef.h> - - -int main(int argc, char* argv[]) -{ - int switch_print = 0; - int switch_export = 0; - int switch_help = 0; - pid_t group; - char** args; - int off; - - for (off = 1; off < argc; off++) - if (!strcmp(argv[off], "--print")) - switch_print = 1; - else if (!strcmp(argv[off], "--export")) - { - switch_export = ++off; - if (off == argc) - goto help; - } - else if (!strcmp(argv[off], "--help")) - { - switch_help = 1; - goto help; - } - else if (!strcmp(argv[off], "--")) - { - off++; - break; - } - else if (argv[off][0] != '-') - break; - else - goto help; - - group = setpgid(0, 0); - if (group == (pid_t)-1) - goto fail; - group = getpgrp(); - - args = malloc((size_t)(argc - off + 1) * sizeof(char*)); - if (args == NULL) - goto fail; - - memcpy(args, argv + off, (size_t)(argc - off) * sizeof(char*)); - args[argc - off] = NULL; - - if (switch_print) - if (printf("%ji\n", (intmax_t)group) < 0) - goto fail; - - if (switch_export) - { - char group_str[3 * sizeof(pid_t) + 1]; - if (sprintf(group_str, "%ji", (intmax_t)group) < 0) - goto fail; - if (setenv(argv[switch_export], group_str, 1) < 0) - goto fail; - } - - execvp(args[0], args); - - fail: - perror(*argv); - return 1; - - help: - printf("USAGE: %s [options] [--] [command...]\n", *argv); - printf("\n"); - printf(" --print Print the process group to stdout.\n"); - printf(" --export VAR Export the process group to the ENV environment variable.\n"); - printf("\n"); - return !switch_help; -} - |