fstab_import: add program to IMPORT matching fstab entry
DEVPATH=/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda6 SUBSYSTEM=block ... ID_FS_USAGE=filesystem ID_FS_TYPE=ext3 ID_FS_VERSION=1.0 ... FSTAB_NAME=/dev/disk/by-id/scsi-SATA_ST910021AS_3MH0Y3KF-part6 FSTAB_DIR=/home/kay/work FSTAB_TYPE=ext3 FSTAB_OPTS=defaults FSTAB_FREQ=1 FSTAB_PASSNO=1
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Kay Sievers
parent
927e994219
commit
6b795c99e0
2
extras/fstab_import/79-fstab_import.rules
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2
extras/fstab_import/79-fstab_import.rules
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@ -0,0 +1,2 @@
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ACTION=="add", SUBSYSTEM=="block", ENV{ID_FS_USAGE}=="filesystem|other", IMPORT="fstab_import --root=$root $name $links mapper/$env{DM_NAME}"
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72
extras/fstab_import/Makefile
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72
extras/fstab_import/Makefile
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@ -0,0 +1,72 @@
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# Makefile for udev extra invoked from the udev main Makefile
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#
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# Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
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#
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# Released under the GNU General Public License, version 2.
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#
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PROG = fstab_import
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OBJ =
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HEADERS =
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GEN_HEADERS =
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MAN_PAGES =
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prefix =
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etcdir = ${prefix}/etc
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sbindir = ${prefix}/sbin
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usrbindir = ${prefix}/usr/bin
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usrsbindir = ${prefix}/usr/sbin
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libudevdir = ${prefix}/lib/udev
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mandir = ${prefix}/usr/share/man
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configdir = ${etcdir}/udev/
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INSTALL = install -c
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INSTALL_PROGRAM = ${INSTALL}
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INSTALL_DATA = ${INSTALL} -m 644
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INSTALL_SCRIPT = ${INSTALL}
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all: $(PROG) $(MAN_PAGES)
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.PHONY: all
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.DEFAULT: all
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%.o: %.c $(GEN_HEADERS)
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$(E) " CC " $@
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$(Q) $(CC) -c $(CFLAGS) $< -o $@
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$(PROG): %: $(HEADERS) %.o $(OBJS)
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$(E) " LD " $@
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$(Q) $(LD) $(LDFLAGS) $@.o $(OBJS) -o $@ $(LIBUDEV) $(LIB_OBJS)
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# man pages
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%.8: %.xml
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$(E) " XMLTO " $@
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$(Q) xmlto man $?
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.PRECIOUS: %.8
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clean:
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$(E) " CLEAN "
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$(Q) rm -f $(PROG) $(OBJS) $(GEN_HEADERS)
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.PHONY: clean
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install-bin: all
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$(INSTALL_PROGRAM) -D $(PROG) $(DESTDIR)$(libudevdir)/$(PROG)
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$(INSTALL_DATA) 79-fstab_import.rules $(DESTDIR)$(configdir)/rules.d/79-fstab_import.rules
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.PHONY: install-bin
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uninstall-bin:
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- rm $(DESTDIR)$(libudevdir)/$(PROG)
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- rm $(DESTDIR)$(configdir)/rules.d/79-fstab_import.rules
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.PHONY: uninstall-bin
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install-man:
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@echo "Please create a man page for this tool."
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.PHONY: install-man
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uninstall-man:
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@echo "Please create a man page for this tool."
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.PHONY: uninstall-man
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install-config:
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@echo "no config file to install"
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.PHONY: install-config
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213
extras/fstab_import/fstab_import.c
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213
extras/fstab_import/fstab_import.c
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@ -0,0 +1,213 @@
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/*
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* find matching entry in fstab and export it
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*
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* Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#include <getopt.h>
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#include <mntent.h>
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#include <sys/stat.h>
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#include "../../udev.h"
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static int debug;
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static char root[PATH_SIZE] = "/dev";
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static char **devices;
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#ifdef USE_LOG
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void log_message(int priority, const char *format, ...)
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{
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va_list args;
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static int udev_log = -1;
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if (udev_log == -1) {
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const char *value;
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value = getenv("UDEV_LOG");
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if (value)
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udev_log = log_priority(value);
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else
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udev_log = LOG_ERR;
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if (debug && udev_log < LOG_INFO)
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udev_log = LOG_INFO;
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}
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if (priority > udev_log)
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return;
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va_start(args, format);
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if (debug) {
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fprintf(stderr, "[%d] ", (int) getpid());
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vfprintf(stderr, format, args);
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} else
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vsyslog(priority, format, args);
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va_end(args);
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}
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#endif
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static int matches_device_list(const char *name)
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{
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int i;
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for (i = 0; devices[i] != NULL; i++) {
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info("compare '%s' == '%s'\n", name, devices[i]);
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if (strcmp(devices[i], name) == 0)
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return 1;
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}
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return 0;
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}
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static void print_fstab_entry(struct mntent *mnt)
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{
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printf("FSTAB_NAME=%s\n", mnt->mnt_fsname);
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printf("FSTAB_DIR=%s\n", mnt->mnt_dir);
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printf("FSTAB_TYPE=%s\n", mnt->mnt_type);
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printf("FSTAB_OPTS=%s\n", mnt->mnt_opts);
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printf("FSTAB_FREQ=%d\n", mnt->mnt_freq);
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printf("FSTAB_PASSNO=%d\n", mnt->mnt_passno);
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}
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int main(int argc, char *argv[])
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{
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static const struct option options[] = {
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{ "export", 0, NULL, 'x' },
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{ "root", 1, NULL, 'r' },
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{ "debug", 0, NULL, 'd' },
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{ "help", 0, NULL, 'h' },
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{}
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};
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FILE *fp;
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struct mntent *mnt;
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int rc = 0;
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logging_init("fstab_id");
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while (1) {
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int option;
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option = getopt_long(argc, argv, "dr:xh", options, NULL);
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if (option == -1)
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break;
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switch (option) {
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case 'r':
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strlcpy(root, optarg, sizeof(root));
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break;
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case 'd':
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debug = 1;
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break;
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case 'h':
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printf("Usage: fstab_id [OPTIONS] name [...]\n"
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" --export print environment keys\n"
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" --root device node root (default /dev)\n"
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" --debug debug to stderr\n"
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" --help print this help text\n\n");
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default:
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rc = 1;
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goto exit;
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}
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}
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devices = &argv[optind];
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if (devices[0] == NULL) {
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fprintf(stderr, "error: missing device(s) to match\n");
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rc = 2;
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goto exit;
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}
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fp = setmntent ("/etc/fstab", "r");
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if (fp == NULL) {
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fprintf(stderr, "error: opening fstab: %s\n", strerror(errno));
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rc = 2;
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goto exit;
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}
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while (1) {
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mnt = getmntent(fp);
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if (mnt == NULL)
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break;
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/* skip root device */
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if (strcmp(mnt->mnt_dir, "/") == 0)
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continue;
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/* match LABEL */
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if (strncmp(mnt->mnt_fsname, "LABEL=", 6) == 0) {
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const char *label;
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char str[256];
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label = &mnt->mnt_fsname[6];
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if (label[0] == '"' || label[0] == '\'') {
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char *pos;
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strlcpy(str, &label[1], sizeof(str));
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pos = strrchr(str, label[0]);
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if (pos == NULL)
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continue;
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pos[0] = '\0';
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label = str;
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}
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if (matches_device_list(str)) {
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print_fstab_entry(mnt);
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break;
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}
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continue;
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}
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/* match UUID */
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if (strncmp(mnt->mnt_fsname, "UUID=", 5) == 0) {
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const char *uuid;
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char str[256];
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uuid = &mnt->mnt_fsname[5];
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if (uuid[0] == '"' || uuid[0] == '\'') {
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char *pos;
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strlcpy(str, &uuid[1], sizeof(str));
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pos = strrchr(str, uuid[0]);
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if (pos == NULL)
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continue;
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pos[0] = '\0';
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uuid = str;
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}
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if (matches_device_list(str)) {
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print_fstab_entry(mnt);
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break;
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}
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continue;
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}
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/* only devices */
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if (strncmp(mnt->mnt_fsname, root, strlen(root)) != 0)
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continue;
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if (matches_device_list(&mnt->mnt_fsname[strlen(root)+1])) {
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print_fstab_entry(mnt);
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break;
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}
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}
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endmntent(fp);
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exit:
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logging_close();
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return rc;
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}
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@ -11,7 +11,8 @@ EXTRAS="\
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extras/floppy \
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extras/firmware \
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extras/collect \
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extras/rule_generator"
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extras/rule_generator \
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extras/fstab_import"
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# with debug
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make clean EXTRAS="$EXTRAS" >/dev/null
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