diff options
Diffstat (limited to 'extras/scsi_id')
| -rw-r--r-- | extras/scsi_id/COPYING | 340 | ||||
| -rw-r--r-- | extras/scsi_id/Makefile | 51 | ||||
| -rw-r--r-- | extras/scsi_id/README | 19 | ||||
| -rw-r--r-- | extras/scsi_id/TODO | 16 | ||||
| -rw-r--r-- | extras/scsi_id/VERSION | 1 | ||||
| -rw-r--r-- | extras/scsi_id/scsi.h | 96 | ||||
| -rw-r--r-- | extras/scsi_id/scsi_id.c | 827 | ||||
| -rw-r--r-- | extras/scsi_id/scsi_id.config | 40 | ||||
| -rw-r--r-- | extras/scsi_id/scsi_id.h | 42 | ||||
| -rw-r--r-- | extras/scsi_id/scsi_serial.c | 735 |
10 files changed, 2167 insertions, 0 deletions
diff --git a/extras/scsi_id/COPYING b/extras/scsi_id/COPYING new file mode 100644 index 0000000000..60549be514 --- /dev/null +++ b/extras/scsi_id/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. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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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. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) 19yy <name of author> + + 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) 19yy 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. + + <signature of Ty Coon>, 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/extras/scsi_id/Makefile b/extras/scsi_id/Makefile new file mode 100644 index 0000000000..5ad2bcf3e1 --- /dev/null +++ b/extras/scsi_id/Makefile @@ -0,0 +1,51 @@ +# +# Copyright (C) 2003 IBM +# +# 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; version 2 of the License. +# +# 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 + +VERSION=0.1 + +prefix = +sbindir = ${prefix}/sbin + +INSTALL = /usr/bin/install -c +INSTALL_PROGRAM = ${INSTALL} +INSTALL_DATA = ${INSTALL} -m 644 + +CFLAGS=-DVERSION=\"$(VERSION)\" $(DEBUG) -Wall + +PROG=scsi_id + +LIBSYSFS=-lsysfs +STRIP=-s +LDFLAGS=$(STRIP) --static + +OBJS= scsi_id.o \ + scsi_serial.o \ + +all: $(PROG) + +install: all + $(INSTALL_PROGRAM) -D $(PROG) $(sbindir)/$(PROG) + +uninstall: + -rm $(sbindir)/$(PROG) + +$(OBJS): scsi_id.h scsi.h + +clean: + rm -f $(PROG) $(OBJS) + +$(PROG): $(OBJS) + $(CC) $(OBJS) $(LDFLAGS) $(LIBSYSFS) -o $(PROG) diff --git a/extras/scsi_id/README b/extras/scsi_id/README new file mode 100644 index 0000000000..b13cf1e50a --- /dev/null +++ b/extras/scsi_id/README @@ -0,0 +1,19 @@ +scsi_id - generate a SCSI unique identifier for a given SCSI device + +Primarily for use with udev callout config entries. This could also be +used by a multi-path configuration tool that requires SCSI id's. + +Requires: + +- Linux kernel 2.6 + +- libsysfs + +No man page yet. + +libsysfs 0_2_0 was not installing libsysfs.h or dlist.h, manually copy +those files to /usr/include/sys before compiling. + +Build via make and make install. + +Please send questions, comments or patches to patmans@us.ibm.com. diff --git a/extras/scsi_id/TODO b/extras/scsi_id/TODO new file mode 100644 index 0000000000..ba52101431 --- /dev/null +++ b/extras/scsi_id/TODO @@ -0,0 +1,16 @@ +- Investigate shrinking build size: use klibc or uClibc, or copy whatever + udev does + +- write a man page + +- send in kernel patch for REQ_BLOCK_PC, to always set sd and sr set + retries (scmd->allowed) to <= 1 + +- Pull SG_IO code into one .c file. + +- implement callout to device specific serial id code. The "-c prog" is + not implemented. + + This needs an implementation of a device specific callout before it can + be completed. Someone with hardware requiring this needs to send in a + patch. diff --git a/extras/scsi_id/VERSION b/extras/scsi_id/VERSION new file mode 100644 index 0000000000..49d59571fb --- /dev/null +++ b/extras/scsi_id/VERSION @@ -0,0 +1 @@ +0.1 diff --git a/extras/scsi_id/scsi.h b/extras/scsi_id/scsi.h new file mode 100644 index 0000000000..780e001576 --- /dev/null +++ b/extras/scsi_id/scsi.h @@ -0,0 +1,96 @@ +/* + * scsi.h + * + * General scsi and linux scsi specific defines and structs. + * + * Copyright (C) IBM Corp. 2003 + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include <scsi/scsi.h> + +struct scsi_ioctl_command { + unsigned int inlen; /* excluding scsi command length */ + unsigned int outlen; + unsigned char data[1]; + /* on input, scsi command starts here then opt. data */ +}; + +/* + * Default 5 second timeout + */ +#define DEF_TIMEOUT 5000 + +#define SENSE_BUFF_LEN 32 + +/* + * SCSI INQUIRY vendor and model (really product) lengths. + */ +#define VENDOR_LENGTH 8 +#define MODEL_LENGTH 16 + +#define INQUIRY_CMD 0x12 +#define INQUIRY_CMDLEN 6 + +/* + * INQUIRY VPD page 0x83 identifier descriptor related values. Reference the + * SCSI Primary Commands specification for details. + */ + +/* + * id type values of id descriptors. These are assumed to fit in 4 bits. + */ +#define SCSI_ID_VENDOR_SPECIFIC 0 +#define SCSI_ID_T10_VENDOR 1 +#define SCSI_ID_EUI_64 2 +#define SCSI_ID_NAA 3 + +/* + * Supported NAA values. These fit in 4 bits, so the "don't care" value + * cannot conflict with real values. + */ +#define SCSI_ID_NAA_DONT_CARE 0xff +#define SCSI_ID_NAA_IEEE_REG 5 +#define SCSI_ID_NAA_IEEE_REG_EXTENDED 6 + +/* + * Supported Code Set values. + */ +#define SCSI_ID_BINARY 1 +#define SCSI_ID_ASCII 2 + +struct scsi_id_search_values { + u_char id_type; + u_char naa_type; + u_char code_set; +}; + +/* + * Following are the "true" SCSI status codes. Linux has traditionally + * used a 1 bit right and masked version of these. So now CHECK_CONDITION + * and friends (in <scsi/scsi.h>) are deprecated. + */ +#define SCSI_CHECK_CONDITION 0x2 +#define SCSI_CONDITION_MET 0x4 +#define SCSI_BUSY 0x8 +#define SCSI_IMMEDIATE 0x10 +#define SCSI_IMMEDIATE_CONDITION_MET 0x14 +#define SCSI_RESERVATION_CONFLICT 0x18 +#define SCSI_COMMAND_TERMINATED 0x22 +#define SCSI_TASK_SET_FULL 0x28 +#define SCSI_ACA_ACTIVE 0x30 +#define SCSI_TASK_ABORTED 0x40 diff --git a/extras/scsi_id/scsi_id.c b/extras/scsi_id/scsi_id.c new file mode 100644 index 0000000000..d34d9284e5 --- /dev/null +++ b/extras/scsi_id/scsi_id.c @@ -0,0 +1,827 @@ +/* + * scsi_id.c + * + * Main section of the scsi_id program + * + * Copyright (C) IBM Corp. 2003 + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include <stdio.h> +#include <stdlib.h> +#include <getopt.h> +#include <unistd.h> +#include <signal.h> +#include <fcntl.h> +#include <errno.h> +#include <string.h> +#include <syslog.h> +#include <stdarg.h> +#include <ctype.h> +#include <sys/stat.h> +#include <sys/libsysfs.h> +#include "scsi_id.h" + +#ifndef VERSION +#warning No version +#define VERSION "unknown" +#endif + +/* + * temporary names for mknod. + */ +#define TMP_DIR "/tmp" +#define TMP_PREFIX "scsi" + +#define CONFIG_FILE "/etc/scsi_id.config" + +#define MAX_NAME_LEN 72 + +#define MAX_SERIAL_LEN 128 + +static const char short_options[] = "bc:d:ef:gip:s:vV"; +static const struct option long_options[] = { + {"broken", no_argument, NULL, 'b'}, /* also per dev */ + {"callout", required_argument, NULL, 'c'}, /* also per dev */ + {"device", required_argument, NULL, 'd'}, + {"stderr", no_argument, NULL, 'e'}, + {"file", required_argument, NULL, 'f'}, + {"good", no_argument, NULL, 'g'}, /* also per dev */ + {"busid", no_argument, NULL, 'i'}, /* also per dev */ + {"page", required_argument, NULL, 'p'}, /* also per dev */ + {"devpath", required_argument, NULL, 's'}, + {"verbose", no_argument, NULL, 'v'}, + {"version", no_argument, NULL, 'V'}, + {0, 0, 0, 0} +}; +/* + * Just duplicate per dev options. + */ +static const char dev_short_options[] = "bc:gp:"; +static const struct option dev_long_options[] = { + {"broken", no_argument, NULL, 'b'}, /* also per dev */ + {"callout", required_argument, NULL, 'c'}, /* also per dev */ + {"good", no_argument, NULL, 'g'}, /* also per dev */ + {"page", required_argument, NULL, 'p'}, /* also per dev */ + {0, 0, 0, 0} +}; + +char sysfs_mnt_path[SYSFS_PATH_MAX]; + +static int all_good; +static char *default_callout; +static int dev_specified; +static int sys_specified; +static char config_file[MAX_NAME_LEN] = CONFIG_FILE; +static int display_bus_id; +static int default_page_code; +static int use_stderr; +static int debug; +static int hotplug_mode; + +void log_message (int level, const char *format, ...) +{ + va_list args; + + if (!debug && level == LOG_DEBUG) + return; + + va_start (args, format); + if (!hotplug_mode || use_stderr) { + vfprintf(stderr, format, args); + } else { + static int logging_init = 0; + if (!logging_init) { + openlog ("scsi_id", LOG_PID, LOG_DAEMON); + logging_init = 1; + } + + vsyslog(level, format, args); + } + va_end (args); + return; +} + +static int sysfs_get_actual_dev(const char *sysfs_path, char *dev, int len) +{ + dprintf("%s\n", sysfs_path); + strncpy(dev, sysfs_path, len); + strncat(dev, "/device", len); + if (sysfs_get_link(dev, dev, len)) { + if (!hotplug_mode) + log_message(LOG_WARNING, "%s: %s\n", dev, + strerror(errno)); + return -1; + } + return 0; +} + +/* + * sysfs_is_bus: Given the sysfs_path to a device, return 1 if sysfs_path + * is on bus, 0 if not on bus, and < 0 on error + */ +static int sysfs_is_bus(const char *sysfs_path, const char *bus) +{ + char bus_dev_name[SYSFS_PATH_MAX]; + char bus_id[SYSFS_NAME_LEN]; + struct stat stat_buf; + ino_t dev_inode; + + dprintf("%s\n", sysfs_path); + + if (sysfs_get_name_from_path(sysfs_path, bus_id, SYSFS_NAME_LEN)) + return -1; + + snprintf(bus_dev_name, MAX_NAME_LEN, "%s/%s/%s/%s/%s", sysfs_mnt_path, + SYSFS_BUS_DIR, bus, SYSFS_DEVICES_NAME, bus_id); + + if (stat(sysfs_path, &stat_buf)) + return -1; + dev_inode = stat_buf.st_ino; + + if (stat(bus_dev_name, &stat_buf)) { + if (errno == ENOENT) + return 0; + else + return -1; + } + if (dev_inode == stat_buf.st_ino) + return 1; + else + return 0; +} + +static int get_major_minor(const char *devpath, int *major, int *minor) +{ + struct sysfs_class_device *class_dev; + char dev_value[SYSFS_NAME_LEN]; + char *dev; + + dprintf("%s\n", devpath); + class_dev = sysfs_open_class_device(devpath); + if (!class_dev) { + log_message(LOG_WARNING, "open class %s failed: %s\n", devpath, + strerror(errno)); + return -1; + } + + dev = sysfs_get_attr(class_dev, "dev"); + if (dev) + strncpy(dev_value, dev, SYSFS_NAME_LEN); + sysfs_close_class_device(class_dev); + if (!dev) { + /* + * XXX This happens a lot, since sg has no dev attr. + * Someday change this back to a LOG_WARNING. + */ + log_message(LOG_DEBUG, "%s could not get dev attribute: %s\n", + devpath, strerror(errno)); + return -1; + } + dev = NULL; + + dprintf("dev %s", dev_value); /* dev_value has a trailing \n */ + if (sscanf(dev_value, "%u:%u", major, minor) != 2) { + log_message(LOG_WARNING, "%s: invalid dev major/minor\n", + devpath); + return -1; + } + + return 0; +} + +static int create_tmp_dev(const char *devpath, char *tmpdev, int dev_type) +{ + int major, minor; + + dprintf("(%s)\n", devpath); + + if (get_major_minor(devpath, &major, &minor)) + return -1; + snprintf(tmpdev, MAX_NAME_LEN, "%s/%s-maj%d-min%d-%u", + TMP_DIR, TMP_PREFIX, major, minor, getpid()); + + dprintf("tmpdev '%s'\n", tmpdev); + + if (mknod(tmpdev, 0600 | dev_type, makedev(major, minor))) { + log_message(LOG_WARNING, "mknod failed: %s\n", strerror(errno)); + return -1; + } + return 0; +} + +static int has_sysfs_prefix(const char *path, const char *prefix) +{ + char match[MAX_NAME_LEN]; + + strncpy(match, sysfs_mnt_path, MAX_NAME_LEN); + strncat(match, prefix, MAX_NAME_LEN); + if (strncmp(path, match, strlen(match)) == 0) + return 1; + else + return 0; +} + +/* + * get_value: + * + * buf points to an '=' followed by a quoted string ("foo") or a string ending + * with a space or ','. + * + * Return a pointer to the NUL terminated string, returns NULL if no + * matches. + */ +static char *get_value(char **buffer) +{ + static char *quote_string = "\"\n"; + static char *comma_string = ",\n"; + char *val; + char *end; + + if (**buffer == '"') { + /* + * skip leading quote, terminate when quote seen + */ + (*buffer)++; + end = quote_string; + } else { + end = comma_string; + } + val = strsep(buffer, end); + if (val && end == quote_string) + /* + * skip trailing quote + */ + (*buffer)++; + + while (isspace(**buffer)) + (*buffer)++; + + return val; +} + +static int argc_count(char *opts) +{ + int i = 0; + while (*opts != '\0') + if (*opts++ == ' ') + i++; + return i; +} + +/* + * get_file_options: + * + * If vendor == NULL, find a line in the config file with only "OPTIONS="; + * if vendor and model are set find the first OPTIONS line in the config + * file that matches. Set argc and argv to match the OPTIONS string. + * + * vendor and model can end in '\n'. + */ +static int get_file_options(char *vendor, char *model, int *argc, + char ***newargv) +{ + char buffer[256]; + FILE *fd; + char *buf; + char *str1; + char *vendor_in, *model_in, *options_in; /* read in from file */ + int lineno; + int c; + int retval = 0; + static char *prog_string = "arg0"; + + dprintf("vendor='%s'; model='%s'\n", vendor, model); + fd = fopen(config_file, "r"); + if (fd == NULL) { + dprintf("can't open %s\n", config_file); + if (errno == ENOENT) { + return 1; + } else { + log_message(LOG_WARNING, "can't open %s: %s\n", + config_file, strerror(errno)); + return -1; + } + } + + *newargv = NULL; + lineno = 0; + + while (1) { + vendor_in = model_in = options_in = NULL; + + buf = fgets(buffer, sizeof(buffer), fd); + if (buf == NULL) + break; + lineno++; + + while (isspace(*buf)) + buf++; + + if (*buf == '\0') + /* + * blank or all whitespace line + */ + continue; + + if (*buf == '#') + /* + * comment line + */ + continue; + +#ifdef LOTS + dprintf("lineno %d: '%s'\n", lineno, buf); +#endif + str1 = strsep(&buf, "="); + if (str1 && strcasecmp(str1, "VENDOR") == 0) { + str1 = get_value(&buf); + if (!str1) { + retval = -1; + break; + } + vendor_in = str1; + + str1 = strsep(&buf, "="); + if (str1 && strcasecmp(str1, "MODEL") == 0) { + str1 = get_value(&buf); + if (!str1) { + retval = -1; + break; + } + model_in = str1; + str1 = strsep(&buf, "="); + } + } + + if (str1 && strcasecmp(str1, "OPTIONS") == 0) { + str1 = get_value(&buf); + if (!str1) { + retval = -1; + break; + } + options_in = str1; + } + dprintf("config file line %d:" + " vendor '%s'; model '%s'; options '%s'\n", + lineno, vendor_in, model_in, options_in); + /* + * Only allow: [vendor=foo[,model=bar]]options=stuff + */ + if (!options_in || (!vendor_in && model_in)) { + log_message(LOG_WARNING, + "Error parsing config file line %d '%s'\n", + lineno, buffer); + retval = -1; + break; + } + if (vendor == NULL) { + if (vendor_in == NULL) { + dprintf("matched global option\n"); + break; + } + } else if ((vendor_in && strncmp(vendor, vendor_in, + strlen(vendor_in)) == 0) && + (!model_in || (strncmp(model, model_in, + strlen(model_in)) == 0))) { + /* + * Matched vendor and optionally model. + * + * Note: a short vendor_in or model_in can + * give a partial match (that is FOO + * matches FOOBAR). + */ + dprintf("matched vendor/model\n"); + break; + } else { + dprintf("no match\n"); + } + } + + if (retval == 0) { + if (vendor_in != NULL || model_in != NULL || + options_in != NULL) { + /* + * Something matched. Allocate newargv, and store + * values found in options_in. + */ + c = argc_count(options_in) + 2; + *newargv = calloc(c, sizeof(**newargv)); + if (!*newargv) { + log_message(LOG_WARNING, + "Can't allocate memory\n"); + retval = -1; + } else { + *argc = c; + c = 0; + (*newargv)[c] = prog_string; /* nothing */ + for (c = 1; c < *argc; c++) + (*newargv)[c] = strsep(&options_in, " "); + } + } else { + /* + * No matches. + */ + retval = 1; + } + } + fclose(fd); + return retval; +} + +static int set_options(int argc, char **argv, const char *short_opts, + const struct option *long_opts, char *target, + char *maj_min_dev) +{ + int option; + int option_ind; + + /* + * optind is a global extern used by getopt_long. Since we can + * call set_options twice (once for command line, and once for + * config file) we have to reset this back to 0. + */ + optind = 0; + while (1) { + option = getopt_long(argc, argv, short_options, long_options, + &option_ind); + if (option == -1) + break; + + if (optarg) + dprintf("option '%c' arg '%s'\n", option, optarg); + else + dprintf("option '%c'\n", option); + + switch (option) { + case 'b': + all_good = 0; + break; + + case 'c': + default_callout = optarg; + break; + + case 'd': + dev_specified = 1; + strncpy(maj_min_dev, optarg, MAX_NAME_LEN); + break; + + case 'e': + use_stderr = 1; + break; + + case 'f': + strncpy(config_file, optarg, MAX_NAME_LEN); + break; + + case 'g': + all_good = 1; + break; + + case 'i': + display_bus_id = 1; + break; + + case 'p': + if (strcmp(optarg, "0x80") == 0) { + default_page_code = 0x80; + } else if (strcmp(optarg, "0x83") == 0) { + default_page_code = 0x83; + } else { + log_message(LOG_WARNING, + "Unknown page code '%s'\n", optarg); + return -1; + } + break; + + case 's': + sys_specified = 1; + strncpy(target, sysfs_mnt_path, MAX_NAME_LEN); + strncat(target, optarg, MAX_NAME_LEN); + break; + + case 'v': + debug++; + break; + + case 'V': + log_message(LOG_WARNING, "scsi_id version: %s\n", + VERSION); + exit(0); + break; + + default: + log_message(LOG_WARNING, + "Unknown or bad option '%c' (0x%x)\n", + option, option); + return -1; + } + } + return 0; +} + +static int per_dev_options(struct sysfs_class_device *scsi_dev, int *good_bad, + int *page_code, char *callout) +{ + int retval; + int newargc; + char **newargv = NULL; + char *vendor; + char *model; + int option; + int option_ind; + + + *good_bad = all_good; + *page_code = default_page_code; + if (default_callout && (callout != default_callout)) + strncpy(callout, default_callout, MAX_NAME_LEN); + else + callout[0] = '\0'; + + vendor = sysfs_get_attr(scsi_dev, "vendor"); + if (!vendor) { + log_message(LOG_WARNING, "%s: no vendor attribute\n", + scsi_dev->name); + return -1; + } + + model = sysfs_get_attr(scsi_dev, "model"); + if (!vendor) { + log_message(LOG_WARNING, "%s: no model attribute\n", + scsi_dev->name); + return -1; + } + + retval = get_file_options(vendor, model, &newargc, &newargv); + + optind = 0; /* global extern, reset to 0 */ + while (retval == 0) { + option = getopt_long(newargc, newargv, dev_short_options, + dev_long_options, &option_ind); + if (option == -1) + break; + + if (optarg) + dprintf("option '%c' arg '%s'\n", option, optarg); + else + dprintf("option '%c'\n", option); + + switch (option) { + case 'b': + *good_bad = 0; + break; + + case 'c': + strncpy(callout, default_callout, MAX_NAME_LEN); + break; + + case 'g': + *good_bad = 1; + break; + + case 'p': + if (strcmp(optarg, "0x80") == 0) { + *page_code = 0x80; + } else if (strcmp(optarg, "0x83") == 0) { + *page_code = 0x83; + } else { + log_message(LOG_WARNING, + "Unknown page code '%s'\n", optarg); + retval = -1; + } + break; + + default: + log_message(LOG_WARNING, + "Unknown or bad option '%c' (0x%x)\n", + option, option); + retval = -1; + break; + } + } + + if (newargv) + free(newargv); + return retval; +} + +/* + * scsi_id: try to get an id, if one is found, printf it to stdout. + * returns a value passed to exit() - 0 if printed an id, else 1. This + * could be expanded, for example, if we want to report a failure like no + * memory etc. return 2, and return 1 for expected cases (like broken + * device found) that do not print an id. + */ +static int scsi_id(const char *target_path, char *maj_min_dev) +{ + int retval; + int dev_type = 0; + char full_dev_path[MAX_NAME_LEN]; + char serial[MAX_SERIAL_LEN]; + struct sysfs_class_device *scsi_dev; /* of scsi_device full_dev_path */ + int good_dev; + int page_code; + char callout[MAX_NAME_LEN]; + + dprintf("target_path %s\n", target_path); + + /* + * Ugly: depend on the sysfs path to tell us whether this is a + * block or char device. This should probably be encoded in the + * "dev" along with the major/minor. + */ + if (has_sysfs_prefix(target_path, "/block")) { + dev_type = S_IFBLK; + } else if (has_sysfs_prefix(target_path, "/class")) { + dev_type = S_IFCHR; + } else { + if (!hotplug_mode) { + log_message(LOG_WARNING, + "Non block or class device '%s'\n", + target_path); + return 1; + } else { + /* + * Expected in some cases. + */ + dprintf("Non block or class device\n"); + return 0; + } + } + + if (sysfs_get_actual_dev(target_path, full_dev_path, MAX_NAME_LEN)) + return 1; + + dprintf("full_dev_path %s\n", full_dev_path); + + /* + * Allow only scsi devices (those that have a matching device + * under /bus/scsi/devices). + * + * Other block devices can support SG IO, but only ide-cd does, so + * for now, don't bother with anything else. + */ + retval = sysfs_is_bus(full_dev_path, "scsi"); + if (retval == 0) { + if (hotplug_mode) + /* + * Expected in some cases. + */ + dprintf("%s is not a scsi device\n", target_path); + else + log_message(LOG_WARNING, "%s is not a scsi device\n", + target_path); + return 1; + } else if (retval < 0) { + log_message(LOG_WARNING, "sysfs_is_bus failed: %s\n", + strerror(errno)); + return 1; + } + + /* + * mknod a temp dev to communicate with the device. + */ + if (!dev_specified && create_tmp_dev(target_path, maj_min_dev, + dev_type)) { + dprintf("create_tmp_dev failed\n"); + return 1; + } + + scsi_dev = sysfs_open_class_device(full_dev_path); + if (!scsi_dev) { + log_message(LOG_WARNING, "open class %s failed: %s\n", + full_dev_path, strerror(errno)); + return 1; + } + + /* + * Get any per device (vendor + model) options from the config + * file. + */ + retval = per_dev_options(scsi_dev, &good_dev, &page_code, callout); + dprintf("per dev options: good %d; page code 0x%x; callout '%s'\n", + good_dev, page_code, callout); + + if (!good_dev) { + retval = 1; + } else if (callout[0] != '\0') { + /* + * exec vendor callout, pass it only the "name" to be used + * for error messages, and the dev to open. + * + * This won't work if we need to pass on the original + * command line (when not hotplug mode) since the option + * parsing and per dev parsing modify the argv's. + * + * XXX Not implemented yet. And not fully tested ;-) + */ + retval = 1; + } else if (scsi_get_serial(scsi_dev, maj_min_dev, page_code, + serial, MAX_SERIAL_LEN)) { + retval = 1; + } else { + retval = 0; + } + if (!retval) { + if (display_bus_id) + printf("%s ", scsi_dev->name); + printf("%s", serial); + if (!hotplug_mode) + printf("\n"); + dprintf("%s\n", serial); + retval = 0; + } + fflush(stdout); + sysfs_close_class_device(scsi_dev); + + if (!dev_specified) + unlink(maj_min_dev); + + return retval; +} + +int main(int argc, char **argv) +{ + int retval; + char *devpath; + char target_path[MAX_NAME_LEN]; + char maj_min_dev[MAX_NAME_LEN]; + int newargc; + char **newargv; + + if (getenv("DEBUG")) + debug++; + + if ((argc == 2) && (argv[1][0] != '-')) { + hotplug_mode = 1; + dprintf("hotplug assumed\n"); + } + + dprintf("argc is %d\n", argc); + if (sysfs_get_mnt_path(sysfs_mnt_path, MAX_NAME_LEN)) { + log_message(LOG_WARNING, "sysfs_get_mnt_path failed: %s\n", + strerror(errno)); + exit(1); + } + + if (hotplug_mode) { + /* + * There is a kernel race creating attributes, if called + * directly, uncomment the sleep. + */ + /* sleep(1); */ + + devpath = getenv("DEVPATH"); + if (!devpath) { + log_message(LOG_WARNING, "DEVPATH is not set\n"); + exit(1); + } + sys_specified = 1; + + strncpy(target_path, sysfs_mnt_path, MAX_NAME_LEN); + strncat(target_path, devpath, MAX_NAME_LEN); + } else { + if (set_options(argc, argv, short_options, long_options, + target_path, maj_min_dev) < 0) + exit(1); + } + + /* + * Override any command line options set via the config file. This + * is the only way to set options when in hotplug mode. + */ + newargv = NULL; + retval = get_file_options(NULL, NULL, &newargc, &newargv); + if (retval < 0) { + exit(1); + } else if (newargv && (retval == 0)) { + if (set_options(newargc, newargv, short_options, long_options, + target_path, maj_min_dev) < 0) + exit(1); + free(newargv); + } + + if (!sys_specified) { + log_message(LOG_WARNING, "-s must be specified\n"); + exit(1); + } + + retval = scsi_id(target_path, maj_min_dev); + exit(retval); +} diff --git a/extras/scsi_id/scsi_id.config b/extras/scsi_id/scsi_id.config new file mode 100644 index 0000000000..4fdb89e28a --- /dev/null +++ b/extras/scsi_id/scsi_id.config @@ -0,0 +1,40 @@ +# +# Informational and example scsi_id.config file for use with scsi_id. +# + +# General syntax is: +# +# lower or upper case has no affect on the left side. Quotes (") are +# required if you need spaces in values. Model is the same as the SCSI +# INQUIRY product identification field. Per the SCSI INQUIRY, the vendor +# is limited to 8 bytes, model to 16 bytes. +# +# The first maching line found is used. Short matches match longer ones, +# if you do not want such a match space fill the extra bytes. If no model +# is specified, only the vendor string need match. +# +# The "option" line is searched when scsi_id first starts up (for use with +# hotplug during boot). +# +# options=<any scsi_id command line options> +# +# vendor=string[,model=string],options=<per-device scsi_id options> + +# +# If you normally don't need id's, black list everyone: +# +options=-b + +# +# Then white list devices on your system that have correct and useful id's: +# +vendor=someone, model=nicedrive, options=-g + +# If you have all good devices on your system use, mark all as good: + +## options=-g + +# Then black list any offenders. Missing entries here could be dangerous +# if you rely on the id for naming or multi-path configuration! + +## vendor=ELBONIA, model=borken, options=-b diff --git a/extras/scsi_id/scsi_id.h b/extras/scsi_id/scsi_id.h new file mode 100644 index 0000000000..8be492b75a --- /dev/null +++ b/extras/scsi_id/scsi_id.h @@ -0,0 +1,42 @@ +/* + * scsi_id.h + * + * General defines and such for scsi_id + * + * Copyright (C) IBM Corp. 2003 + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#define dprintf(format, arg...) \ + log_message(LOG_DEBUG, "%s: " format, __FUNCTION__, ## arg) + +#define MAX_NAME_LEN 72 +#define OFFSET (2 * sizeof(unsigned int)) + +static inline char *sysfs_get_attr(struct sysfs_class_device *dev, + const char *attr) +{ + return sysfs_get_value_from_attributes(dev->directory->attributes, + attr); +} + +extern int scsi_get_serial (struct sysfs_class_device *scsi_dev, + const char *devname, int page_code, char *serial, + int len); +extern void log_message (int level, const char *format, ...) + __attribute__ ((format (printf, 2, 3))); + diff --git a/extras/scsi_id/scsi_serial.c b/extras/scsi_id/scsi_serial.c new file mode 100644 index 0000000000..302429c0d4 --- /dev/null +++ b/extras/scsi_id/scsi_serial.c @@ -0,0 +1,735 @@ +/* + * scsi_serial.c + * + * Code related to requesting and getting an id from a scsi device + * + * Copyright (C) IBM Corp. 2003 + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <fcntl.h> +#include <stdlib.h> +#include <unistd.h> +#include <syslog.h> +#include <scsi/sg.h> +#include <sys/libsysfs.h> +#include "scsi_id.h" +#include "scsi.h" + +/* + * A priority based list of id, naa, and binary/ascii for the identifier + * descriptor in VPD page 0x83. + * + * Brute force search for a match starting with the first value in the + * following id_search_list. This is not a performance issue, since there + * is normally one or some small number of descriptors. + */ +static const struct scsi_id_search_values id_search_list[] = { + { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_BINARY }, + { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG_EXTENDED, SCSI_ID_ASCII }, + { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_BINARY }, + { SCSI_ID_NAA, SCSI_ID_NAA_IEEE_REG, SCSI_ID_ASCII }, + /* + * Devices already exist using NAA values that are now marked + * reserved. These should not conflict with other values, or it is + * a bug in the device. As long as we find the IEEE extended one + * first, we really don't care what other ones are used. Using + * don't care here means that a device that returns multiple + * non-IEEE descriptors in a random order will get different + * names. + */ + { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY }, + { SCSI_ID_NAA, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII }, + { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY }, + { SCSI_ID_EUI_64, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII }, + { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY }, + { SCSI_ID_T10_VENDOR, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII }, + { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_BINARY }, + { SCSI_ID_VENDOR_SPECIFIC, SCSI_ID_NAA_DONT_CARE, SCSI_ID_ASCII }, +}; + +static const char hex_str[]="0123456789abcdef"; + +/* + * XXX maybe move all these to an sg_io.c file. + * + * From here ... + */ + +/* + * Values returned in the result/status, only the ones used by the code + * are used here. + */ + +#define DID_NO_CONNECT 0x01 /* Unable to connect before timeout */ + +#define DID_BUS_BUSY 0x02 /* Bus remain busy until timeout */ +#define DID_TIME_OUT 0x03 /* Timed out for some other reason */ + +#define DRIVER_TIMEOUT 0x06 +#define DRIVER_SENSE 0x08 /* Sense_buffer has been set */ + +/* The following "category" function returns one of the following */ +#define SG_ERR_CAT_CLEAN 0 /* No errors or other information */ +#define SG_ERR_CAT_MEDIA_CHANGED 1 /* interpreted from sense buffer */ +#define SG_ERR_CAT_RESET 2 /* interpreted from sense buffer */ +#define SG_ERR_CAT_TIMEOUT 3 +#define SG_ERR_CAT_RECOVERED 4 /* Successful command after recovered err */ +#define SG_ERR_CAT_SENSE 98 /* Something else in the sense buffer */ +#define SG_ERR_CAT_OTHER 99 /* Some other error/warning */ + +static int sg_err_category_new(int scsi_status, int msg_status, int + host_status, int driver_status, const + unsigned char *sense_buffer, int sb_len) +{ + scsi_status &= 0x7e; + + /* + * XXX change to return only two values - failed or OK. + */ + + /* + * checks msg_status + */ + if (!scsi_status && !msg_status && !host_status && !driver_status) + return SG_ERR_CAT_CLEAN; + + if ((scsi_status == SCSI_CHECK_CONDITION) || + (scsi_status == SCSI_COMMAND_TERMINATED) || + ((driver_status & 0xf) == DRIVER_SENSE)) { + if (sense_buffer && (sb_len > 2)) { + int sense_key; + unsigned char asc; + + if (sense_buffer[0] & 0x2) { + sense_key = sense_buffer[1] & 0xf; + asc = sense_buffer[2]; + } else { + sense_key = sense_buffer[2] & 0xf; + asc = (sb_len > 12) ? sense_buffer[12] : 0; + } + + if (sense_key == RECOVERED_ERROR) + return SG_ERR_CAT_RECOVERED; + else if (sense_key == UNIT_ATTENTION) { + if (0x28 == asc) + return SG_ERR_CAT_MEDIA_CHANGED; + if (0x29 == asc) + return SG_ERR_CAT_RESET; + } + } + return SG_ERR_CAT_SENSE; + } + if (!host_status) { + if ((host_status == DID_NO_CONNECT) || + (host_status == DID_BUS_BUSY) || + (host_status == DID_TIME_OUT)) + return SG_ERR_CAT_TIMEOUT; + } + if (!driver_status) { + if (driver_status == DRIVER_TIMEOUT) + return SG_ERR_CAT_TIMEOUT; + } + return SG_ERR_CAT_OTHER; +} + +static int sg_err_category3(struct sg_io_hdr *hp) +{ + return sg_err_category_new(hp->status, hp->msg_status, + hp->host_status, hp->driver_status, + hp->sbp, hp->sb_len_wr); +} + +static int scsi_dump_sense(struct sysfs_class_device *scsi_dev, + struct sg_io_hdr *io) +{ + unsigned char *sense_buffer; + int s; + int sb_len; + int code; + int sense_class; + int sense_key; + int descriptor_format; + int asc, ascq; +#ifdef DUMP_SENSE + char out_buffer[256]; + int i, j; +#endif + + /* + * Figure out and print the sense key, asc and ascq. + * + * If you want to suppress these for a particular drive model, add + * a black list entry in the scsi_id config file. + * + * XXX We probably need to: lookup the sense/asc/ascq in a retry + * table, and if found return 1 (after dumping the sense, asc, and + * ascq). So, if/when we get something like a power on/reset, + * we'll retry the command. + */ + + dprintf("got check condition\n"); + + sb_len = io->sb_len_wr; + if (sb_len < 1) { + log_message(LOG_WARNING, "%s: sense buffer empty\n", + scsi_dev->name); + return -1; + } + + sense_buffer = io->sbp; + sense_class = (sense_buffer[0] >> 4) & 0x07; + code = sense_buffer[0] & 0xf; + + if (sense_class == 7) { + /* + * extended sense data. + */ + s = sense_buffer[7] + 8; + if (sb_len < s) { + log_message(LOG_WARNING, + "%s: sense buffer too small %d bytes," + " %d bytes too short\n", scsi_dev->name, + sb_len, s - sb_len); + return -1; + } + if ((code == 0x0) || (code == 0x1)) { + descriptor_format = 0; + sense_key = sense_buffer[2] & 0xf; + if (s < 14) { + /* + * Possible? + */ + log_message(LOG_WARNING, "%s: sense result too" + " small %d bytes\n", + scsi_dev->name, s); + return -1; + } + asc = sense_buffer[12]; + ascq = sense_buffer[13]; + } else if ((code == 0x2) || (code == 0x3)) { + descriptor_format = 1; + sense_key = sense_buffer[1] & 0xf; + asc = sense_buffer[2]; + ascq = sense_buffer[3]; + } else { + log_message(LOG_WARNING, + "%s: invalid sense code 0x%x\n", + scsi_dev->name, code); + return -1; + } + log_message(LOG_WARNING, + "%s: sense key 0x%x ASC 0x%x ASCQ 0x%x\n", + scsi_dev->name, sense_key, asc, ascq); + } else { + if (sb_len < 4) { + log_message(LOG_WARNING, + "%s: sense buffer too small %d bytes, %d bytes too short\n", + scsi_dev->name, sb_len, 4 - sb_len); + return -1; + } + + if (sense_buffer[0] < 15) + log_message(LOG_WARNING, "%s: old sense key: 0x%x\n", + scsi_dev->name, sense_buffer[0] & 0x0f); + else + log_message(LOG_WARNING, "%s: sense = %2x %2x\n", + scsi_dev->name, sense_buffer[0], + sense_buffer[2]); + log_message(LOG_WARNING, + "%s: non-extended sense class %d code 0x%0x ", + scsi_dev->name, sense_class, code); + + } + +#ifdef DUMP_SENSE + for (i = 0, j = 0; (i < s) && (j < 254); i++) { + dprintf("i %d, j %d\n", i, j); + out_buffer[j++] = hex_str[(sense_buffer[i] & 0xf0) >> 4]; + out_buffer[j++] = hex_str[sense_buffer[i] & 0x0f]; + out_buffer[j++] = ' '; + } + out_buffer[j] = '\0'; + log_message(LOG_WARNING, "%s: sense dump:\n", scsi_dev->name); + log_message(LOG_WARNING, "%s: %s\n", scsi_dev->name, out_buffer); + +#endif + return -1; +} + +static int scsi_dump(struct sysfs_class_device *scsi_dev, struct sg_io_hdr *io) +{ + if (!io->status && !io->host_status && !io->msg_status && + !io->driver_status) { + /* + * Impossible, should not be called. + */ + log_message(LOG_WARNING, "%s: called with no error\n", + __FUNCTION__); + return -1; + } + + log_message(LOG_WARNING, "%s: sg_io failed status 0x%x 0x%x 0x%x 0x%x\n", + scsi_dev->name, io->driver_status, io->host_status, + io->msg_status, io->status); + if (io->status == SCSI_CHECK_CONDITION) + return scsi_dump_sense(scsi_dev, io); + else + return -1; +} + +static int scsi_inquiry(struct sysfs_class_device *scsi_dev, int fd, + unsigned char evpd, unsigned char page, unsigned + char *buf, unsigned int buflen) +{ + unsigned char inq_cmd[INQUIRY_CMDLEN] = + { INQUIRY_CMD, evpd, page, 0, buflen, 0 }; + unsigned char sense[SENSE_BUFF_LEN]; + struct sg_io_hdr io_hdr; + int retval; + unsigned char *inq; + unsigned char *buffer; + int retry = 3; /* rather random */ + + if (buflen > 255) { + log_message(LOG_WARNING, "buflen %d too long\n", buflen); + return -1; + } + inq = malloc(OFFSET + sizeof (inq_cmd) + 512); + memset(inq, 0, OFFSET + sizeof (inq_cmd) + 512); + buffer = inq + OFFSET; + +resend: + memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); + io_hdr.interface_id = 'S'; + io_hdr.cmd_len = sizeof(inq_cmd); + io_hdr.mx_sb_len = sizeof(sense); + io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; + io_hdr.dxfer_len = buflen; + io_hdr.dxferp = buffer; + io_hdr.cmdp = inq_cmd; + io_hdr.sbp = sense; + io_hdr.timeout = DEF_TIMEOUT; + + if (ioctl(fd, SG_IO, &io_hdr) < 0) { + log_message(LOG_WARNING, "%s ioctl failed: %s\n", + scsi_dev->name, strerror(errno)); + return -1; + } + + retval = sg_err_category3(&io_hdr); + + switch (retval) { + case SG_ERR_CAT_CLEAN: + case SG_ERR_CAT_RECOVERED: + retval = 0; + break; + + default: + retval = scsi_dump(scsi_dev, &io_hdr); + } + + if (!retval) { + retval = buflen; + memcpy(buf, buffer, retval); + } else if (retval > 0) { + if (--retry > 0) { + dprintf("%s: Retrying ...\n", scsi_dev->name); + goto resend; + } + retval = -1; + } + + free(inq); + return retval; +} + +/* + * XXX maybe move all these to an sg_io.c file. + * + * Ending here. + */ + +int do_scsi_page0_inquiry(struct sysfs_class_device *scsi_dev, int fd, + char *buffer, int len) +{ + int retval; + char *vendor; + + memset(buffer, 0, len); + retval = scsi_inquiry(scsi_dev, fd, 1, 0x0, buffer, len); + if (retval < 0) + return 1; + + if (buffer[1] != 0) { + log_message(LOG_WARNING, "%s: page 0 not available.\n", + scsi_dev->name); + return 1; + } + if (buffer[3] > len) { + log_message(LOG_WARNING, "%s: page 0 buffer too long %d", + scsi_dev->name, buffer[3]); + return 1; + } + + /* + * Following check is based on code once included in the 2.5.x + * kernel. + * + * Some ill behaved devices return the standard inquiry here + * rather than the evpd data, snoop the data to verify. + */ + if (buffer[3] > MODEL_LENGTH) { + /* + * If the vendor id appears in the page assume the page is + * invalid. + */ + vendor = sysfs_get_attr(scsi_dev, "vendor"); + if (!vendor) { + log_message(LOG_WARNING, "%s: no vendor attribute\n", + scsi_dev->name); + return 1; + } + if (!strncmp(&buffer[VENDOR_LENGTH], vendor, VENDOR_LENGTH)) { + log_message(LOG_WARNING, "%s invalid page0 data\n", + scsi_dev->name); + return 1; + } + } + return 0; +} + +/* + * The caller checks that serial is long enough to include the vendor + + * model. + */ +static int prepend_vendor_model(struct sysfs_class_device *scsi_dev, + char *serial) +{ + char *attr; + int ind; + + attr = sysfs_get_attr(scsi_dev, "vendor"); + if (!attr) { + log_message(LOG_WARNING, "%s: no vendor attribute\n", + scsi_dev->name); + return 1; + } + strncpy(serial, attr, VENDOR_LENGTH); + ind = strlen(serial) - 1; + /* + * Remove sysfs added newlines. + */ + if (serial[ind] == '\n') + serial[ind] = '\0'; + + attr = sysfs_get_attr(scsi_dev, "model"); + if (!attr) { + log_message(LOG_WARNING, "%s: no model attribute\n", + scsi_dev->name); + return 1; + } + strncat(serial, attr, MODEL_LENGTH); + ind = strlen(serial) - 1; + if (serial[ind] == '\n') + serial[ind] = '\0'; + else + ind++; + + /* + * This is not a complete check, since we are using strncat/cpy + * above, ind will never be too large. + */ + if (ind != (VENDOR_LENGTH + MODEL_LENGTH)) { + log_message(LOG_WARNING, "%s: expected length %d, got length %d\n", + scsi_dev->name, (VENDOR_LENGTH + MODEL_LENGTH), + ind); + return 1; + } + return ind; +} + +/** + * check_fill_0x83_id - check the page 0x83 id, if OK allocate and fill + * serial number. + **/ +static int check_fill_0x83_id(struct sysfs_class_device *scsi_dev, + char *page_83, + const struct scsi_id_search_values *id_search, + char *serial, int max_len) +{ + int i, j, len; + + /* + * ASSOCIATION must be with the device (value 0) + */ + if ((page_83[1] & 0x30) != 0) + return 1; + + if ((page_83[1] & 0x0f) != id_search->id_type) + return 1; + + /* + * Possibly check NAA sub-type. + */ + if ((id_search->naa_type != SCSI_ID_NAA_DONT_CARE) && + (id_search->naa_type != (page_83[4] & 0xf0) >> 4)) + return 1; + + /* + * Check for matching code set - ASCII or BINARY. + */ + if ((page_83[0] & 0x0f) != id_search->code_set) + return 1; + + /* + * page_83[3]: identifier length + */ + len = page_83[3]; + if ((page_83[0] & 0x0f) != SCSI_ID_ASCII) + /* + * If not ASCII, use two bytes for each binary value. + */ + len *= 2; + + /* + * Add one byte for the NUL termination, and one for the id_type. + */ + len += 2; + if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC) + len += VENDOR_LENGTH + MODEL_LENGTH; + + if (max_len < len) { + log_message(LOG_WARNING, "%s: length %d too short - need %d\n", + scsi_dev->name, max_len, len); + return 1; + } + + serial[0] = hex_str[id_search->id_type]; + + /* + * Prepend the vendor and model before the id since if it is not + * unique across all vendors and models. + */ + if (id_search->id_type == SCSI_ID_VENDOR_SPECIFIC) + if (prepend_vendor_model(scsi_dev, &serial[1]) < 0) { + dprintf("prepend failed\n"); + return 1; + } + + i = 4; /* offset to the start of the identifier */ + j = strlen(serial); + if ((page_83[0] & 0x0f) == SCSI_ID_ASCII) { + /* + * ASCII descriptor. + */ + while (i < (4 + page_83[3])) + serial[j++] = page_83[i++]; + } else { + /* + * Binary descriptor, convert to ASCII, using two bytes of + * ASCII for each byte in the page_83. + */ + while (i < (4 + page_83[3])) { + serial[j++] = hex_str[(page_83[i] & 0xf0) >> 4]; + serial[j++] = hex_str[page_83[i] & 0x0f]; + i++; + } + } + return 0; +} + +static int do_scsi_page83_inquiry(struct sysfs_class_device *scsi_dev, int fd, + char *serial, int len) +{ + int retval; + int id_ind, j; + unsigned char page_83[256]; + + memset(page_83, 0, 256); + retval = scsi_inquiry(scsi_dev, fd, 1, 0x83, page_83, 255); + if (retval < 0) + return 1; + + if (page_83[1] != 0x83) { + log_message(LOG_WARNING, "%s: Invalid page 0x83\n", + scsi_dev->name); + return 1; + } + + /* + * Search for a match in the prioritized id_search_list. + */ + for (id_ind = 0; + id_ind < sizeof(id_search_list)/sizeof(id_search_list[0]); + id_ind++) { + /* + * Examine each descriptor returned. There is normally only + * one or a small number of descriptors. + */ + for (j = 4; j <= page_83[3] + 3; + j += page_83[j + 3] + 4) { + retval = check_fill_0x83_id(scsi_dev, &page_83[j], + &id_search_list[id_ind], + serial, len); + dprintf("%s id desc %d/%d/%d\n", scsi_dev->name, + id_search_list[id_ind].id_type, + id_search_list[id_ind].naa_type, + id_search_list[id_ind].code_set); + if (!retval) { + dprintf(" used\n"); + return retval; + } else if (retval < 0) { + dprintf(" failed\n"); + return retval; + } else { + dprintf(" not used\n"); + } + } + } + return 1; +} + +int do_scsi_page80_inquiry(struct sysfs_class_device *scsi_dev, int fd, + char *serial, int max_len) +{ + int retval; + int ser_ind; + int i; + int len; + unsigned char buf[256]; + + memset(buf, 0, 256); + retval = scsi_inquiry(scsi_dev, fd, 1, 0x80, buf, 255); + if (retval < 0) + return retval; + + if (buf[1] != 0x80) { + log_message(LOG_WARNING, "%s: Invalid page 0x80\n", + scsi_dev->name); + return 1; + } + + len = 1 + VENDOR_LENGTH + MODEL_LENGTH + buf[3]; + if (max_len < len) { + log_message(LOG_WARNING, "%s: length %d too short - need %d\n", + scsi_dev->name, max_len, len); + return 1; + } + /* + * Prepend 'S' to avoid unlikely collision with page 0x83 vendor + * specific type where we prepend '0' + vendor + model. + */ + serial[0] = 'S'; + ser_ind = prepend_vendor_model(scsi_dev, &serial[1]); + if (ser_ind < 0) + return 1; + len = buf[3]; + for (i = 4; i < len + 4; i++, ser_ind++) + serial[ser_ind] = buf[i]; + return 0; +} + +int scsi_get_serial (struct sysfs_class_device *scsi_dev, const char *devname, + int page_code, char *serial, int len) +{ + unsigned char page0[256]; + int fd; + int ind; + int retval; + + if (len > 255) { + } + memset(serial, 0, len); + dprintf("opening %s\n", devname); + fd = open(devname, O_RDONLY); + if (fd < 0) { + log_message(LOG_WARNING, "%s cannot open %s: %s\n", + scsi_dev->name, devname, strerror(errno)); + return 1; + } + + if (page_code == 0x80) { + if (do_scsi_page80_inquiry(scsi_dev, fd, serial, len)) { + retval = 1; + goto completed; + } else { + retval = 0; + goto completed; + } + } else if (page_code == 0x83) { + if (do_scsi_page83_inquiry(scsi_dev, fd, serial, len)) { + retval = 1; + goto completed; + } else { + retval = 0; + goto completed; + } + } else if (page_code != 0x00) { + log_message(LOG_WARNING, "%s unsupported page code 0x%d\n", + scsi_dev->name, page_code); + return 1; + } + + /* + * Get page 0, the page of the pages. By default, try from best to + * worst of supported pages: 0x83 then 0x80. + */ + if (do_scsi_page0_inquiry(scsi_dev, fd, page0, 255)) { + /* + * Don't try anything else. Black list if a specific page + * should be used for this vendor+model, or maybe have an + * optional fall-back to page 0x80 or page 0x83. + */ + retval = 1; + goto completed; + } + + dprintf("%s: Checking page0\n", scsi_dev->name); + + for (ind = 4; ind <= page0[3] + 3; ind++) + if (page0[ind] == 0x83) + if (!do_scsi_page83_inquiry(scsi_dev, fd, serial, + len)) { + /* + * Success + */ + retval = 0; + goto completed; + } + + for (ind = 4; ind <= page0[3] + 3; ind++) + if (page0[ind] == 0x80) + if (!do_scsi_page80_inquiry(scsi_dev, fd, serial, + len)) { + /* + * Success + */ + retval = 0; + goto completed; + } + retval = 1; +completed: + if (close(fd) < 0) + log_message(LOG_WARNING, "close failed: %s", strerror(errno)); + return retval; +} |