From: Hugo Villeneuve Date: Tue, 4 Nov 2025 18:02:54 +0000 (-0500) Subject: Initial import X-Git-Url: http://gitweb.hugovil.com/?a=commitdiff_plain;h=8a8aed2bb2b2736240c7138f8deb8a6c97c2196a;p=mtlv.git Initial import Setup autotools project. Signed-off-by: Hugo Villeneuve --- 8a8aed2bb2b2736240c7138f8deb8a6c97c2196a diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f5b6372 --- /dev/null +++ b/.gitignore @@ -0,0 +1,22 @@ +*.o +*/.deps/ +*~ +/aclocal.m4 +/autom4te.cache +/config.cache +/config.log +/config.status +/configure +Makefile +Makefile.in +config-h.in +config.h +stamp-h1 +src/mtlv +m4/libtool.m4 +m4/ltoptions.m4 +m4/ltsugar.m4 +m4/ltversion.m4 +m4/lt~obsolete.m4 +build-aux/ltmain.sh +libtool diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..99e1081 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,3 @@ +Authors of mtlv. + +Written by Hugo Villeneuve. diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d60c31a --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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 2 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, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision 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, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This 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 Library General +Public License instead of this License. diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..e69de29 diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..a4b3414 --- /dev/null +++ b/INSTALL @@ -0,0 +1,229 @@ +Copyright 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software +Foundation, Inc. + + This file is free documentation; the Free Software Foundation gives +unlimited permission to copy, distribute and modify it. + +Basic Installation +================== + + These are generic installation instructions. + + The `configure' shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a `Makefile' in each directory of the package. +It may also create one or more `.h' files containing system-dependent +definitions. Finally, it creates a shell script `config.status' that +you can run in the future to recreate the current configuration, and a +file `config.log' containing compiler output (useful mainly for +debugging `configure'). + + It can also use an optional file (typically called `config.cache' +and enabled with `--cache-file=config.cache' or simply `-C') that saves +the results of its tests to speed up reconfiguring. (Caching is +disabled by default to prevent problems with accidental use of stale +cache files.) + + If you need to do unusual things to compile the package, please try +to figure out how `configure' could check whether to do them, and mail +diffs or instructions to the address given in the `README' so they can +be considered for the next release. If you are using the cache, and at +some point `config.cache' contains results you don't want to keep, you +may remove or edit it. + + The file `configure.ac' (or `configure.in') is used to create +`configure' by a program called `autoconf'. You only need +`configure.ac' if you want to change it or regenerate `configure' using +a newer version of `autoconf'. + +The simplest way to compile this package is: + + 1. `cd' to the directory containing the package's source code and type + `./configure' to configure the package for your system. If you're + using `csh' on an old version of System V, you might need to type + `sh ./configure' instead to prevent `csh' from trying to execute + `configure' itself. + + Running `configure' takes awhile. While running, it prints some + messages telling which features it is checking for. + + 2. Type `make' to compile the package. + + 3. Optionally, type `make check' to run any self-tests that come with + the package. + + 4. Type `make install' to install the programs and any data files and + documentation. + + 5. You can remove the program binaries and object files from the + source code directory by typing `make clean'. To also remove the + files that `configure' created (so you can compile the package for + a different kind of computer), type `make distclean'. There is + also a `make maintainer-clean' target, but that is intended mainly + for the package's developers. If you use it, you may have to get + all sorts of other programs in order to regenerate files that came + with the distribution. + +Compilers and Options +===================== + + Some systems require unusual options for compilation or linking that +the `configure' script does not know about. Run `./configure --help' +for details on some of the pertinent environment variables. + + You can give `configure' initial values for configuration parameters +by setting variables in the command line or in the environment. Here +is an example: + + ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix + + *Note Defining Variables::, for more details. + +Compiling For Multiple Architectures +==================================== + + You can compile the package for more than one kind of computer at the +same time, by placing the object files for each architecture in their +own directory. To do this, you must use a version of `make' that +supports the `VPATH' variable, such as GNU `make'. `cd' to the +directory where you want the object files and executables to go and run +the `configure' script. `configure' automatically checks for the +source code in the directory that `configure' is in and in `..'. + + If you have to use a `make' that does not support the `VPATH' +variable, you have to compile the package for one architecture at a +time in the source code directory. After you have installed the +package for one architecture, use `make distclean' before reconfiguring +for another architecture. + +Installation Names +================== + + By default, `make install' will install the package's files in +`/usr/local/bin', `/usr/local/man', etc. You can specify an +installation prefix other than `/usr/local' by giving `configure' the +option `--prefix=PATH'. + + You can specify separate installation prefixes for +architecture-specific files and architecture-independent files. If you +give `configure' the option `--exec-prefix=PATH', the package will use +PATH as the prefix for installing programs and libraries. +Documentation and other data files will still use the regular prefix. + + In addition, if you use an unusual directory layout you can give +options like `--bindir=PATH' to specify different values for particular +kinds of files. Run `configure --help' for a list of the directories +you can set and what kinds of files go in them. + + If the package supports it, you can cause programs to be installed +with an extra prefix or suffix on their names by giving `configure' the +option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. + +Optional Features +================= + + Some packages pay attention to `--enable-FEATURE' options to +`configure', where FEATURE indicates an optional part of the package. +They may also pay attention to `--with-PACKAGE' options, where PACKAGE +is something like `gnu-as' or `x' (for the X Window System). The +`README' should mention any `--enable-' and `--with-' options that the +package recognizes. + + For packages that use the X Window System, `configure' can usually +find the X include and library files automatically, but if it doesn't, +you can use the `configure' options `--x-includes=DIR' and +`--x-libraries=DIR' to specify their locations. + +Specifying the System Type +========================== + + There may be some features `configure' cannot figure out +automatically, but needs to determine by the type of machine the package +will run on. Usually, assuming the package is built to be run on the +_same_ architectures, `configure' can figure that out, but if it prints +a message saying it cannot guess the machine type, give it the +`--build=TYPE' option. TYPE can either be a short name for the system +type, such as `sun4', or a canonical name which has the form: + + CPU-COMPANY-SYSTEM + +where SYSTEM can have one of these forms: + + OS KERNEL-OS + + See the file `config.sub' for the possible values of each field. If +`config.sub' isn't included in this package, then this package doesn't +need to know the machine type. + + If you are _building_ compiler tools for cross-compiling, you should +use the `--target=TYPE' option to select the type of system they will +produce code for. + + If you want to _use_ a cross compiler, that generates code for a +platform different from the build platform, you should specify the +"host" platform (i.e., that on which the generated programs will +eventually be run) with `--host=TYPE'. + +Sharing Defaults +================ + + If you want to set default values for `configure' scripts to share, +you can create a site shell script called `config.site' that gives +default values for variables like `CC', `cache_file', and `prefix'. +`configure' looks for `PREFIX/share/config.site' if it exists, then +`PREFIX/etc/config.site' if it exists. Or, you can set the +`CONFIG_SITE' environment variable to the location of the site script. +A warning: not all `configure' scripts look for a site script. + +Defining Variables +================== + + Variables not defined in a site shell script can be set in the +environment passed to `configure'. However, some packages may run +configure again during the build, and the customized values of these +variables may be lost. In order to avoid this problem, you should set +them in the `configure' command line, using `VAR=value'. For example: + + ./configure CC=/usr/local2/bin/gcc + +will cause the specified gcc to be used as the C compiler (unless it is +overridden in the site shell script). + +`configure' Invocation +====================== + + `configure' recognizes the following options to control how it +operates. + +`--help' +`-h' + Print a summary of the options to `configure', and exit. + +`--version' +`-V' + Print the version of Autoconf used to generate the `configure' + script, and exit. + +`--cache-file=FILE' + Enable the cache: use and save the results of the tests in FILE, + traditionally `config.cache'. FILE defaults to `/dev/null' to + disable caching. + +`--config-cache' +`-C' + Alias for `--cache-file=config.cache'. + +`--quiet' +`--silent' +`-q' + Do not print messages saying which checks are being made. To + suppress all normal output, redirect it to `/dev/null' (any error + messages will still be shown). + +`--srcdir=DIR' + Look for the package's source code in directory DIR. Usually + `configure' can determine that directory automatically. + +`configure' also accepts some other, not widely useful, options. Run +`configure --help' for more details. + diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..63bedb7 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,37 @@ +## Makefile.am -- Process this file with automake to produce Makefile.in + +SUBDIRS = \ + src \ + doc + +ACLOCAL_AMFLAGS = -I m4 + +LIBTOOL_MACROS = \ + m4/libtool.m4 \ + m4/ltoptions.m4 \ + m4/ltsugar.m4 \ + m4/ltversion.m4 \ + m4/lt~obsolete.m4 + +CLEANFILES = *~ + +DISTCLEANFILES = .deps/*.P + +MAINTAINERCLEANFILES = \ + Makefile.in \ + aclocal.m4 \ + configure \ + config-h.in \ + stamp-h.in \ + $(ac_aux_dir)/depcomp \ + $(ac_aux_dir)/install-sh \ + $(ac_aux_dir)/missing \ + $(ac_aux_dir)/mkinstalldirs \ + $(ac_aux_dir)/config.guess \ + $(ac_aux_dir)/config.sub \ + $(ac_aux_dir)/ltmain.sh \ + $(ac_aux_dir)/compile \ + $(ac_aux_dir)/test-driver \ + $(ac_aux_dir)/ar-lib \ + $(ac_aux_dir)/ylwrap \ + $(LIBTOOL_MACROS) diff --git a/NEWS b/NEWS new file mode 100644 index 0000000..e69de29 diff --git a/README b/README new file mode 100644 index 0000000..1a72e6b --- /dev/null +++ b/README @@ -0,0 +1,17 @@ +mtlv + +mtlv is a tool to read/write EEPROM TLV key/values. + +For recent project news, see the NEWS file. + +Project website: + + http://www.hugovil.com/en/mtlv + +Installation: + + For installation instructions, see the INSTALL file. + +Cross-compiling: + + ./configure --host=arm-linux-gnueabi diff --git a/THANKS b/THANKS new file mode 100644 index 0000000..e69de29 diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000..ef6884b --- /dev/null +++ b/autogen.sh @@ -0,0 +1,6 @@ +#!/bin/sh +# autogen.sh -- Use this script to create generated files from the git distribution + +set -e +autoreconf -vi +rm -rf autom4te.cache diff --git a/build-aux/.gitignore b/build-aux/.gitignore new file mode 100644 index 0000000..21a44b5 --- /dev/null +++ b/build-aux/.gitignore @@ -0,0 +1,9 @@ +compile +config.guess +config.rpath +config.sub +depcomp +install-sh +missing +test-driver +ar-lib diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..c8b9adb --- /dev/null +++ b/configure.ac @@ -0,0 +1,56 @@ +# configure.ac -- Process this file with autoconf to produce configure + +dnl Initialization stuff. +AC_INIT([mtlv],[0.0.1],[hugo@hugovil.com],[mtlv],[http://www.hugovil.com/mtlv/]) +AC_CONFIG_AUX_DIR([build-aux]) +AC_CONFIG_MACRO_DIR([m4]) +AC_CONFIG_SRCDIR(src/tlv_eeprom.c) +AC_CONFIG_HEADERS(config.h:config-h.in) + +dnl -Wno-extra-portability: +dnl To get rid of message: +dnl linking libraries using a non-POSIX archiver requires 'AM_PROG_AR'... +dnl -Wall: +dnl Ask automake to turn on all warnings (not a gcc flag) +AM_INIT_AUTOMAKE([no-define gnits dist-bzip2 color-tests + -Wall -Wno-extra-portability]) +AM_SILENT_RULES([yes]) + +dnl Testing the C compiler. +AC_LANG([C]) + +dnl Testing for libtool support. +LT_INIT + +dnl Checking for typedefs, structures, and compiler characteristics. +AC_C_CONST +AC_TYPE_PID_T +AC_TYPE_SIZE_T + +dnl Basic warning CFLAGS values +WARNINGCFLAGS="-Wall -Wextra -Wformat -Wformat-security" + +dnl zlib required for its crc32 function +ac_have_zlib=no + +PKG_CHECK_MODULES([zlib], [zlib > 1.2.1], + [AC_CHECK_LIB([z], [crc32], + [ac_have_zlib=yes], + [ac_have_zlib=no])]) + +if test x"$ac_have_zlib" = x"yes" ; then + ZLIB_LIBS='-lz' + AC_SUBST(ZLIB_LIBS) +else + AC_MSG_ERROR([Please install zlib and zlib-devel packages]) +fi + +AC_SUBST(WARNINGCFLAGS) +AC_SUBST(ac_aux_dir) + +dnl Creating output file(s) +AC_CONFIG_FILES([Makefile + src/Makefile + doc/Makefile]) + +AC_OUTPUT diff --git a/doc/Makefile.am b/doc/Makefile.am new file mode 100644 index 0000000..e54cb41 --- /dev/null +++ b/doc/Makefile.am @@ -0,0 +1,9 @@ +## Makefile.am -- Process this file with automake to produce Makefile.in + +man1_MANS = mtlv.man + +EXTRA_DIST = $(man1_MANS) + +CLEANFILES = *~ + +MAINTAINERCLEANFILES = Makefile.in diff --git a/doc/mtlv.man b/doc/mtlv.man new file mode 100644 index 0000000..75c35c6 --- /dev/null +++ b/doc/mtlv.man @@ -0,0 +1,29 @@ +.TH MTLV 1 "May 2024" "mtlv" "User's Manual" + +.SH NAME +mtlv \- EEPROM TLV read/write tool. + +.SH SYNOPSIS +.B mtlv +[\fIOPTION\fR]... [\fIFILENAME\fR] + +.SH DESCRIPTION +\fBmtlv\fR is a ... [TODO]. + +.SH "OPTIONS" + +.TP +\fB\-h\fR +display usage and exit +.TP +\fB\-version\fR +output version information and exit + +.SH CREDITS +\fBmtlv\fR was originally written by Hugo Villeneuve . + +.SH COPYRIGHT +\fBmtlv\fR is free; anyone may redistribute it to anyone under the terms +stated in the GNU General Public License. A copy of the license is included in +the \fBmtlv\fR distribution. You can also browse it online at +.I http://www.gnu.org/copyleft/gpl.html diff --git a/m4/.gitignore b/m4/.gitignore new file mode 100644 index 0000000..e69de29 diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..a6d7523 --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,21 @@ +# This file is processed by GNU automake to generate Makefile.in + +AM_CPPFLAGS = \ + $(WARNINGCFLAGS) + +LDADD = \ + @ZLIB_LIBS@ + +bin_PROGRAMS = mtlv + +mtlv_SOURCES = \ + main.c \ + options.c options.h \ + tlv_eeprom.c tlv_eeprom.h \ + linux-compat.h \ + kernel.h + +CLEANFILES = *~ + +MAINTAINERCLEANFILES = \ + Makefile.in diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..c7de315 --- /dev/null +++ b/src/main.c @@ -0,0 +1,167 @@ +/* + * Copyright (C) 2020 Hugo Villeneuve + * + * This file is released under the GPLv2 + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "options.h" +#include "tlv_eeprom.h" + +/* #define EEPROM_DEBUG 1 */ + +extern struct options_t options; + +static int fd; + +int eeprom_open(int flags) +{ + char path[PATH_MAX]; + int rc; + + if (options.eeprom_path) + rc = snprintf(path, sizeof(path), "%s", options.eeprom_path); + else + rc = snprintf(path, sizeof(path), "/sys/bus/i2c/devices/%d-%04X/eeprom", + options.i2c_bus, options.i2c_addr); + + if (rc <= 0) + return -ENODEV; + + fd = open(path, flags); + if (fd < 0) { + printf("Error opening EEPROM \"%s\": %s\n", path, strerror(errno)); + return -ENODEV; + } + + return 0; +} + +int eeprom_block_read(int offset, uint8_t *buf, int size) +{ + int rc; +#ifdef EEPROM_DEBUG + int i; +#endif /* EEPROM_DEBUG */ + + rc = eeprom_open(O_RDONLY); + if (rc < 0) + return -ENODEV; + + rc = pread(fd, buf, size, offset); + close(fd); + if (rc != size) { + printf("Error reading EEPROM data: %s\n", strerror(errno));; + return -1; + } + +#ifdef EEPROM_DEBUG + for (i = 0; i < size; i++) + printf("data[%02d] = $%02X\n", i, ((uint8_t *)buf)[i]); +#endif /* EEPROM_DEBUG */ + + return 0; +} + +int eeprom_block_write(int offset, const uint8_t *buf, int size) +{ + int rc; + + rc = eeprom_open(O_RDWR); + if (rc < 0) + return -ENODEV; + + rc = pwrite(fd, buf, size, offset); + close(fd); + if (rc != size) { + printf("Error writing EEPROM data: %s\n", strerror(errno));; + return -1; + } + + return 0; +} + +int +main(int argc, char **argv) +{ + int rc; + /* The EEPROM contents after being read into memory */ + u8 eeprom[TLV_INFO_MAX_LEN]; + + rc = parse_command_line_options(argc, argv); + if (rc) + exit(EXIT_FAILURE); + + if (options.tlv_cmd == TLV_CMD_INIT) { + tlvinfo_default_tlv(eeprom); + + rc = prog_eeprom(-1, eeprom); + if (rc) { + log_err("Error writing TLV EEPROM\n"); + exit(EXIT_FAILURE); + } + + exit(EXIT_SUCCESS); + } + + /* Read all EEPROM content: */ + rc = read_eeprom(-1, eeprom); + if (rc) { + log_err("Error reading TLV EEPROM\n"); + exit(EXIT_FAILURE); + } + + /* For all other operations, we must have a valid TLV header and CRC: */ + if (!is_valid_tlvinfo(eeprom)) { + log_err("Invalid TLV infos in EEPROM\n"); + log_err("See init command\n"); + exit(EXIT_FAILURE); + } + + if (options.tlv_cmd == TLV_CMD_ADD) { + rc = tlvinfo_add_tlv(eeprom, options.tlv_key, options.tlv_value); + if (rc == false) { + log_err("Error setting TLV key\n"); + exit(EXIT_FAILURE); + } + } else if (options.tlv_cmd == TLV_CMD_DEL) { + rc = tlvinfo_delete_tlv(eeprom, options.tlv_key); + if (rc == false) { + log_err("Error deleting TLV key\n"); + exit(EXIT_FAILURE); + } + } else if (options.tlv_cmd == TLV_CMD_LIST) { + show_tlv_code_list(); + } else { + if (options.tlv_key > 0) { + (void) tlvinfo_show_tlv(eeprom, options.tlv_key); + } else + show_eeprom(-1, eeprom); + } + + switch (options.tlv_cmd) { + case TLV_CMD_ADD: + case TLV_CMD_DEL: + rc = prog_eeprom(-1, eeprom); + if (rc < 0) { + log_err("Error updating TLV infos\n"); + exit(EXIT_FAILURE); + } + default: + break; + } + + close(fd); + + exit(EXIT_SUCCESS); +} diff --git a/src/options.c b/src/options.c new file mode 100644 index 0000000..4709c78 --- /dev/null +++ b/src/options.c @@ -0,0 +1,201 @@ +/* + * options.c -- functions for processing command-line options and arguments + * + * Copyright (C) 2011 Hugo Villeneuve + * + * This file is released under the GPLv2 + */ + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include +#include /* va_start */ + +#if STDC_HEADERS +# include +#elif HAVE_STRINGS_H +# include +#endif + +#include "options.h" +#include "linux-compat.h" + +#define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0) + +const char *argp_program_version = PACKAGE_VERSION; +const char *argp_program_bug_address = PACKAGE_BUGREPORT; + +/* + * Program documentation. + * Adjacent string constants are concatenated as one string constant. + */ +static const char str_doc[] = PACKAGE_NAME " -- " PACKAGE_DESCRIPTION; + +/* How many non-option arguments we accept. */ +#define ARGS_COUNT 0 + +/* A description of the non-option arguments we accept. */ +static const char args_doc[] = "[EEPROM-PATH]"; + +#define ARGP_CMD_STR \ + " init Write new TLV infos structure in EEPROM\n" \ + " add Add new TLV key/value\n" \ + " del Delete TLV key\n" \ + " list List available TLV keys" + +/* The options we understand. */ +static struct argp_option argp_options[] = { + {"addr", 'a', "num", 0, "I2C device address", 0}, + {"bus", 'b', "num", 0, "I2C bus number", 0}, + {"cmd", 'c', "cmd", 0, "TLV command:", 0}, + {0, 0, 0, 0, ARGP_CMD_STR, 0 }, + {"dev", 'd', "path", 0, "EEPROM device path (if not using I2C bus/addr)", 0}, + {"key", 'k', "key", 0, "TLV key", 0}, + {"value", 'v', "val", 0, "TLV value (string)", 0}, + { 0 } +}; + +struct options_t options; + +/* Log error message. */ +void log_err(const char *format, ...) +{ + FILE *stream = stderr; + va_list ap; + + va_start(ap, format); + (void) vfprintf(stream, format, ap); + va_end(ap); +} + +/* Log error message and exits with error code. */ +void log_fail(const char *format, ...) +{ + va_list ap; + + va_start(ap, format); + log_err(format, ap); + va_end(ap); + + exit(EXIT_FAILURE); +} + +static void +decode_int(char *arg, struct argp_state *state, int *dest) +{ + char *endptr; + + *dest = strtol(arg, &endptr, 0); + + if (*endptr != '\0') { + log_err("Invalid option: %s\n", arg); + argp_usage(state); + } +} + +static void +decode_cmd(char *arg, struct argp_state *state) +{ + if (STREQ(arg, "init")) { + options.tlv_cmd = TLV_CMD_INIT; + } else if (STREQ(arg, "add")) { + options.tlv_cmd = TLV_CMD_ADD; + } else if (STREQ(arg, "del")) { + options.tlv_cmd = TLV_CMD_DEL; + } else if (STREQ(arg, "list")) { + options.tlv_cmd = TLV_CMD_LIST; + } else { + log_fail("Unknown command: %s\n", arg); + argp_usage(state); + } +} + +/* Parse a single option. */ +static error_t +parse_opt(int key, char *arg, struct argp_state *state) +{ + switch (key) { + case 'a': + decode_int(arg, state, &options.i2c_addr); + break; + case 'b': + decode_int(arg, state, &options.i2c_bus); + break; + case 'c': + decode_cmd(arg, state); + break; + case 'd': + options.eeprom_path = arg; + break; + case 'k': + decode_int(arg, state, &options.tlv_key); + break; + case 'v': + options.tlv_value = arg; + break; + case ARGP_KEY_ARG: + /* We do not support any arguments after the options. */ + argp_usage(state); + break; + default: + return ARGP_ERR_UNKNOWN; + } + + return 0; +} + +/* Our argp parser. */ +static struct argp argp = {argp_options, parse_opt, args_doc, str_doc, + NULL, NULL, NULL}; + +/* Initializes the different options passed as arguments on the command line. */ +int parse_command_line_options(int argc, char *argv[]) +{ + error_t rc; + + /* Setting default values. */ + options.i2c_bus = -1; + options.i2c_addr = -1; + options.eeprom_path = NULL; + options.tlv_cmd = TLV_CMD_NONE; + options.tlv_key = -1; + options.tlv_value = NULL; + + /* Parse our arguments. */ + rc = argp_parse(&argp, argc, argv, 0, 0, NULL); + if (rc != 0) + log_fail("Failed to parse command line arguments\n"); + + if (!options.eeprom_path) { + if (options.i2c_bus < 0) + log_fail("Missing EEPROM path or I2C bus number\n"); + + if (options.i2c_addr < 0) + log_fail("Missing EEPROM path or I2C address\n"); + } + + if (options.tlv_cmd == TLV_CMD_ADD) { + if (options.tlv_key < 0) + log_fail("Missing TLV key\n"); + + if (!options.tlv_value) + log_fail("Missing TLV value\n"); + } else if (options.tlv_cmd == TLV_CMD_DEL) { + if (options.tlv_key < 0) + log_fail("Missing TLV key\n"); + + if (options.tlv_value) + log_fail("Value argument invalid when deleting key\n"); + } else if (options.tlv_cmd == TLV_CMD_NONE) { + if (options.tlv_value) + log_fail("Value argument invalid if no command specified\n"); + } + + return rc; +} diff --git a/src/options.h b/src/options.h new file mode 100644 index 0000000..f07f6de --- /dev/null +++ b/src/options.h @@ -0,0 +1,37 @@ +/* + * options.h + * + * Copyright (C) 1999 Hugo Villeneuve + * + * This file is released under the GPLv2 + */ + +#ifndef OPTIONS_H +#define OPTIONS_H 1 + +#include + +#define PACKAGE_COPYRIGHT "(c) Hugo Villeneuve" + +#define PACKAGE_DESCRIPTION "EEPROM TLV read/write tool" + +enum tlv_cmd_t { + TLV_CMD_NONE = 0, + TLV_CMD_INIT, + TLV_CMD_ADD, + TLV_CMD_DEL, + TLV_CMD_LIST, +}; + +struct options_t { + int i2c_bus; + int i2c_addr; + char *eeprom_path; + enum tlv_cmd_t tlv_cmd; + int tlv_key; + char * tlv_value; +}; + +int parse_command_line_options(int argc, char *argv[]); + +#endif /* OPTIONS_H */