From db656c928524eed059ecf3d418efdea0d923072c Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 13 Oct 2017 20:45:48 +0200 Subject: Improve style and license MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- .gitignore | 13 +- COPYING | 16 - DEPENDENCIES | 18 - LICENSE | 683 +----------------------------------- Makefile | 172 +-------- README | 18 +- alarm.1 | 48 +++ alarm.c | 61 ++++ config.mk | 6 + dist/archlinux/stable/.gitignore | 9 - dist/archlinux/stable/PKGBUILD | 24 -- dist/archlinux/stable/alarm.install | 20 -- doc/info/alarm.texinfo | 100 ------ doc/info/fdl.texinfo | 505 -------------------------- doc/man/alarm.1 | 59 ---- src/alarm.c | 95 ----- 16 files changed, 155 insertions(+), 1692 deletions(-) delete mode 100644 COPYING delete mode 100644 DEPENDENCIES create mode 100644 alarm.1 create mode 100644 alarm.c create mode 100644 config.mk delete mode 100644 dist/archlinux/stable/.gitignore delete mode 100644 dist/archlinux/stable/PKGBUILD delete mode 100644 dist/archlinux/stable/alarm.install delete mode 100644 doc/info/alarm.texinfo delete mode 100644 doc/info/fdl.texinfo delete mode 100644 doc/man/alarm.1 delete mode 100644 src/alarm.c diff --git a/.gitignore b/.gitignore index 709e9e7..ad09778 100644 --- a/.gitignore +++ b/.gitignore @@ -1,15 +1,6 @@ -_/ -bin/ -obj/ -\#*\# -.* -!.git* *~ -*.bak -*.swo -*.swp +*\#* *.o *.out -*.gch *.su - +/alarm diff --git a/COPYING b/COPYING deleted file mode 100644 index 4229a8f..0000000 --- a/COPYING +++ /dev/null @@ -1,16 +0,0 @@ -alarm — Schedule an alarm for a program when starting it -Copyright © 2014, 2015 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 . - diff --git a/DEPENDENCIES b/DEPENDENCIES deleted file mode 100644 index 9556cd0..0000000 --- a/DEPENDENCIES +++ /dev/null @@ -1,18 +0,0 @@ -RUNTIME DEPENDENCIES: - - libc - - -BUILD DEPENDENCIES: - - make - c99 - libc - coreutils - - -INSTALL DEPENDENCIES: - - make - coreutils - diff --git a/LICENSE b/LICENSE index 94a9ed0..06f2efb 100644 --- a/LICENSE +++ b/LICENSE @@ -1,674 +1,15 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 +ISC License - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. +© 2014, 2015, 2017 Mattias Andrée - 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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If not, see . - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - Copyright (C) - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. 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 -. - - 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 -. +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. diff --git a/Makefile b/Makefile index 36c520c..cb907c3 100644 --- a/Makefile +++ b/Makefile @@ -1,176 +1,38 @@ -# 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 resource path excluding prefix. -DATA = /share -# The command path including prefix. -BINDIR = $(PREFIX)$(BIN) -# The resource path including prefix. -DATADIR = $(PREFIX)$(DATA) -# The general documentation path including prefix. -DOCDIR = $(DATADIR)/doc -# The info manual path including prefix. -INFODIR = $(DATADIR)/info -# The man page path including prefix. -MANDIR = $(DATADIR)/man -# The man page section 1 path including prefix. -MAN1DIR = $(MANDIR)/man1 -# The license base path including prefix. -LICENSEDIR = $(DATADIR)/licenses +all: alarm -# The name of the package as it should be installed. -PKGNAME = alarm -# The name of the command as it should be installed. -COMMAND = alarm +alarm.o: alarm.c + $(CC) -c -o $@ alarm.c $(CCFLAGS) $(CPPFLAGS) +alarm: alarm.o + $(CC) -o $@ alarm.o $(LDFLAGS) -# Optimisation level (and debug flags.) -OPTIMISE = -Og -g +check: alarm + alarm 1 sleep 2 & a=$$! ;\ + alarm 1s sleep 2 & b=$$! ;\ + alarm 0h2s sleep 1 & c=$$! ;\ + { ! wait $$a; } && { ! wait $$b; } && { wait $$c; } -# 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 - -# The C standard used in the code. -STD = c99 - - - -.PHONY: default -default: command info - -.PHONY: all -all: command doc - -.PHONY: base -base: command - -.PHONY: command -command: bin/alarm - -bin/alarm: obj/alarm.o - @mkdir -p bin - $(CC) $(WARN) -std=$(STD) $(OPTIMISE) $(LDFLAGS) -o $@ $^ - -obj/%.o: src/%.c - @mkdir -p obj - $(CC) $(WARN) -std=$(STD) $(OPTIMISE) $(CFLAGS) $(CPPFLAGS) -c -o $@ $< - -.PHONY: doc -doc: info pdf dvi ps - -.PHONY: info -info: bin/alarm.info -bin/%.info: doc/info/%.texinfo - @mkdir -p bin - $(MAKEINFO) $< - mv $*.info $@ - -.PHONY: pdf -pdf: bin/alarm.pdf -bin/%.pdf: doc/info/%.texinfo - @! test -d obj/pdf || rm -rf obj/pdf - @mkdir -p bin obj/pdf - cd obj/pdf && texi2pdf ../../"$<" < /dev/null - mv obj/pdf/$*.pdf $@ - -.PHONY: dvi -dvi: bin/alarm.dvi -bin/%.dvi: doc/info/%.texinfo - @! test -d obj/dvi || rm -rf obj/dvi - @mkdir -p bin obj/dvi - cd obj/dvi && $(TEXI2DVI) ../../"$<" < /dev/null - mv obj/dvi/$*.dvi $@ - -.PHONY: ps -ps: bin/alarm.ps -bin/%.ps: doc/info/%.texinfo - @! test -d obj/ps || rm -rf obj/ps - @mkdir -p bin obj/ps - cd obj/ps && texi2pdf --ps ../../"$<" < /dev/null - mv obj/ps/$*.ps $@ - - - -.PHONY: install -install: install-base install-man install-info - -.PHONY: install-all -install-all: install-base install-doc - -.PHONY: install-base -install-base: install-command install-license - -.PHONY: install-command -install-command: bin/alarm +install: alarm install -dm755 -- "$(DESTDIR)$(BINDIR)" install -m755 $^ -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -.PHONY: install-license -install-license: install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 COPYING LICENSE -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -.PHONY: install-doc -install-doc: install-info install-pdf install-dvi install-ps install-man - -.PHONY: install-info -install-info: bin/alarm.info - install -dm755 -- "$(DESTDIR)$(INFODIR)" - install -m644 $< -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -.PHONY: install-pdf -install-pdf: bin/alarm.pdf - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -.PHONY: install-dvi -install-dvi: bin/alarm.dvi - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -.PHONY: install-ps -install-ps: bin/alarm.ps - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -install-man: doc/man/alarm.1 + install -m644 LICENSE -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" install -dm755 -- "$(DESTDIR)$(MAN1DIR)" install -m644 $< -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - - -.PHONY: uninstall uninstall: -rm -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING" -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" -rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" -rm -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - -rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - - -.PHONY: clean clean: - -rm -r bin obj + -rm -r -- alarm *.o +.PHONY: all check install uninstall clean diff --git a/README b/README index 92848e7..9d7b240 100644 --- a/README +++ b/README @@ -2,20 +2,20 @@ NAME alarm - Schedule an alarm for a program when starting it SYNOPSIS - alarm DURATION COMMAND [ARGS...] + alarm duration command [argument...] DESCRIPTION Schedules an alarm(3) to best triggered after a specified - DURATION. The process than execvp(3) into COMMAND ARGS. + duration. The process than execvp(3) into command. - This means that COMMAND will be killed by SIGALRM after - a selected DURATION. + This means that command will be killed by SIGALRM after + a selected duration. - DURATION must be a non-negative integer, no larger - than 18h12m15s. Recognised patterns for DURATION are: - * SECONDS[s] - * MINUTESm[SECONDSs] - * HOURSh[MINUTESm][SECONDSs] + duration must be a non-negative integer, no larger + than 18h12m15s. Recognised patterns for duration are: + * seconds[s] + * minutesm[secondss] + * hoursh[minutesm][secondss] RATIONALE This program is useful when testing programs for a limited diff --git a/alarm.1 b/alarm.1 new file mode 100644 index 0000000..198b2c2 --- /dev/null +++ b/alarm.1 @@ -0,0 +1,48 @@ +.TH ALARM 1 ALARM +.SH NAME +alarm - Schedule an alarm for a program when starting it +.SH SYNOPSIS +.BR alarm +.IR duration +.IR command +.RI [ argument \ ...] +.SH DESCRIPTION +Schedules an +.BR alarm (3) +to best triggered after a specified +.IR duration . +The process than +.BR execvp (3) +into +.IR command . +.PP +This means that +.IR command +will be killed by +.BR SIGALRM +after a selected +.IR duration . +.PP +.IR duration +must be a non-negative integer, no larger than 18h12m15s. +Recognised patterns for +.IR duration +are: +.TP +* +.IR seconds [s] +.TP +* +.IR minutes m[ seconds s] +.TP +* +.IR hours h[ minutes m][ seconds s] +.SH RATIONALE +This program is useful when testing programs for a limited +duration. Especially when running in the background, or +there is a chance of it locking the computer. +.SH "SEE ALSO" +.BR alarm (3) +.SH AUTHORS +Mattias Andrée +.RI < maandree@kth.se > diff --git a/alarm.c b/alarm.c new file mode 100644 index 0000000..81ad107 --- /dev/null +++ b/alarm.c @@ -0,0 +1,61 @@ +/* See LICENSE file for copyright and license details. */ +#include +#include +#include +#include +#include +#include + + +static char *argv0; + +static void +usage(void) +{ + fprintf(stderr, "usage: %s duration command [argument ...]\n", argv0); + exit(0); +} + +int +main(int argc, char **argv) +{ + long hours = 0; + long minutes = 0; + long seconds = 0; + long buf = 0; + int hms = 0; + char *time, c; + + argv0 = argv[0]; + if (argc < 3) + usage(); + + time = argv[1]; + while ((c = *time++)) { + if (isdigit(c)) { + buf = buf * 10 - (c & 15); + } else if (strchr("hms", c)) { + if (c == 'h') hours = -buf; + else if (c == 'm') minutes = -buf; + else if (c == 's') seconds = -buf; + buf = 0, hms = 1; + } else { + usage(); + } + } + if (!hms) { + if (strlen(argv[1]) < 1) + return 0; + seconds = -buf; + } + + seconds += minutes * 60; + seconds += hours * 60 * 60; + if (seconds < 1 || 65535 < seconds) + usage(); + + alarm((unsigned)seconds); + execvp(argv[2], &argv[2]); + fprintf(stderr, "%s: execvp %s: %s\n", argv0, argv[2], strerror(ENOMEM)); + return 1; +} diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..5f26cd2 --- /dev/null +++ b/config.mk @@ -0,0 +1,6 @@ +PREFIX = /usr/local +MANPREFIX = $(PREFIX)/share/man + +CCFLAGS = -std=c99 -Wall -Wextra -O2 +CPPFLAGS = +LDFLAGS = -s diff --git a/dist/archlinux/stable/.gitignore b/dist/archlinux/stable/.gitignore deleted file mode 100644 index 3384b99..0000000 --- a/dist/archlinux/stable/.gitignore +++ /dev/null @@ -1,9 +0,0 @@ -* -!/.git* -!/PKGBUILD -!/alarm.install -*~ -*.swo -*.swp -*.bak - diff --git a/dist/archlinux/stable/PKGBUILD b/dist/archlinux/stable/PKGBUILD deleted file mode 100644 index 0306862..0000000 --- a/dist/archlinux/stable/PKGBUILD +++ /dev/null @@ -1,24 +0,0 @@ -# Maintainer: Mattias Andrée <`base64 -d`(bWFhbmRyZWUK)@member.fsf.org> - -pkgname=alarm -pkgver=1.1 -pkgrel=2 -pkgdesc="Schedule an alarm for a program when starting it" -url="https://github.com/maandree/alarm" -arch=(i686 x86_64) -license=(GPL3) -depends=(glibc) -makedepends=(make coreutils gcc glibc texinfo) -install=alarm.install -source=("${url}/archive/${pkgver}.tar.gz") -sha256sums=(a8aa6f12591ce70beaa283214e0f1196dae6f78b7eb4b6e100b96b25627e6ae4) - -build() { - cd "${srcdir}/alarm-${pkgver}" - make DESTDIR="${pkgdir}" -} - -package() { - cd "${srcdir}/alarm-${pkgver}" - make DESTDIR="${pkgdir}" install -} diff --git a/dist/archlinux/stable/alarm.install b/dist/archlinux/stable/alarm.install deleted file mode 100644 index a73b865..0000000 --- a/dist/archlinux/stable/alarm.install +++ /dev/null @@ -1,20 +0,0 @@ -_file="alarm" - -infodir="usr/share/info" -file="${_file}.info" - - -post_install() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - -post_upgrade() { - post_install "$1" -} - -pre_remove() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info --delete -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - diff --git a/doc/info/alarm.texinfo b/doc/info/alarm.texinfo deleted file mode 100644 index d7408fe..0000000 --- a/doc/info/alarm.texinfo +++ /dev/null @@ -1,100 +0,0 @@ -\input texinfo @c -*-texinfo-*- - -@c %**start of header -@setfilename alarm.info -@settitle alarm -@afourpaper -@documentencoding UTF-8 -@documentlanguage en -@finalout -@c %**end of header - - -@dircategory General Commands -@direntry -* alarm: (alarm). Schedule an alarm for a program when starting it -@end direntry - - -@copying -Copyright @copyright{} 2015 Mattias Andrée - -@quotation -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 or -any later version published by the Free Software Foundation; with no -Invariant Sections, with no Front-Cover Texts, and with no Back-Cover -Texts. A copy of the license is included in the section entitled -``GNU Free Documentation License''. -@end quotation -@end copying - -@ifnottex -@node Top -@top alarm -- Schedule an alarm for a program when starting it -@insertcopying -@end ifnottex - -@titlepage -@title alarm -@subtitle Schedule an alarm for a program when starting it -@author by Mattias Andrée (maandree) - -@page -@vskip 0pt plus 1filll -@insertcopying -@page -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{alarm}. -* Invoking:: Executing @command{alarm}. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -Schedules an alarm to best triggered after a specified -duration. The process than exec:s into another command. - -This means that the selected program will start as -normal but then be killed by @code{SIGALRM} after a -selected duration. - -This program is useful when testing programs for a limited -duration. Especially when running in the background, or -there is a chance of it locking the computer. - - - -@node Invoking -@chapter Invoking - -The first argument shall be the duration before @code{SIGALRM} -is sent. The following arguments is the command just as -if you were not using this command. - -The duration must be a non-negative integer, no larger -than 18h12m15s. Recognised patterns are: - -@itemize @bullet -@item @code{SECONDS[s]} -@item @code{MINUTESm[SECONDSs]} -@item @code{HOURSh[MINUTESm][SECONDSs]} -@end itemize - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - diff --git a/doc/info/fdl.texinfo b/doc/info/fdl.texinfo deleted file mode 100644 index cb71f05..0000000 --- a/doc/info/fdl.texinfo +++ /dev/null @@ -1,505 +0,0 @@ -@c The GNU Free Documentation License. -@center Version 1.3, 3 November 2008 - -@c This file is intended to be included within another document, -@c hence no sectioning command or @node. - -@display -Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. -@uref{http://fsf.org/} - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@enumerate 0 -@item -PREAMBLE - -The purpose of this License is to make a manual, textbook, or other -functional and useful document @dfn{free} in the sense of freedom: to -assure everyone the effective freedom to copy and redistribute it, -with or without modifying it, either commercially or noncommercially. -Secondarily, this License preserves for the author and publisher a way -to get credit for their work, while not being considered responsible -for modifications made by others. - -This License is a kind of ``copyleft'', which means that derivative -works of the document must themselves be free in the same sense. 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Especially when running in the background, or -there is a chance of it locking the computer. -.SH "SEE ALSO" -.BR alarm (3) -.SH AUTHORS -Principal author, Mattias Andrée. See the COPYING file for the full -list of authors. -.SH LICENSE -Copyright \(co 2014, 2015 Mattias Andrée -.br -License GPLv3+: GNU GPL version 3 or later . -.br -This is free software: you are free to change and redistribute it. -.br -There is NO WARRANTY, to the extent permitted by law. -.SH BUGS -Please report bugs to https://github.com/maandree/alarm/issues or to -maandree@member.fsf.org diff --git a/src/alarm.c b/src/alarm.c deleted file mode 100644 index 3c989a4..0000000 --- a/src/alarm.c +++ /dev/null @@ -1,95 +0,0 @@ -/** - * alarm — Schedule an alarm for a program when starting it - * 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 . - */ -#include -#include -#include -#include -#include - - -int main(int argc, char** argv) -{ - char** cmdline = NULL; - long hours = 0; - long minutes = 0; - long seconds = 0; - long buf = 0; - int hms = 0; - char* time; - - if (argc < 3) - goto usage; - - time = argv[1]; - while (*time) - { - char c = *time++; - if (('0' <= c) && (c <= '9')) - buf = buf * 10 - (c & 15); - else if (strchr("hms", c)) - { - if (c == 'h') hours = -buf; - else if (c == 'm') minutes = -buf; - else if (c == 's') seconds = -buf; - buf = 0, hms = 1; - } - else - goto usage; - } - if (!hms) - { - if (strlen(argv[1]) < 1) - return 0; - seconds = -buf; - } - - seconds += minutes * 60; - seconds += hours * 60 * 60; - if ((seconds < 1) || (65535 < seconds)) - goto usage; - - cmdline = malloc((size_t)(argc - 1) * sizeof(char*)); - if (cmdline == NULL) - goto fail; - memcpy(cmdline, argv + 2, (size_t)(argc - 2) * sizeof(char*)); - cmdline[argc - 2] = NULL; - - alarm((unsigned)seconds); - execvp(argv[2], cmdline); - - fail: - perror(*argv); - free(cmdline); - return 1; - - usage: - printf("USAGE: %s