/***************************************************************************
*
* probe-storage.c : Probe for storage devices
*
* Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Licensed under the Academic Free License version 2.1
*
**************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mnttab.h>
#include <sys/scsi/scsi.h>
#include <sys/vtoc.h>
#include <sys/efi_partition.h>
#include <priv.h>
#include <libhal.h>
#include <cdutils.h>
#include <fsutils.h>
#include <logger.h>
/** Check if a filesystem on a special device file is mounted
*
* @param device_file Special device file, e.g. /dev/cdrom
* @return TRUE iff there is a filesystem system mounted
* on the special device file
*/
static dbus_bool_t
is_mounted (const char *device_file)
{
FILE *f;
dbus_bool_t rc = FALSE;
struct mnttab mp;
struct mnttab mpref;
if ((f = fopen ("/etc/mnttab", "r")) == NULL)
return rc;
bzero(&mp, sizeof (mp));
bzero(&mpref, sizeof (mpref));
mpref.mnt_special = (char *)device_file;
if (getmntany(f, &mp, &mpref) == 0) {
rc = TRUE;
}
fclose (f);
return rc;
}
static int
get_cdrom_properties_walker (void *arg, int profile, boolean_t is_current)
{
LibHalChangeSet *cs = (LibHalChangeSet *)arg;
switch (profile) {
case 0x09:
libhal_changeset_set_property_bool (cs, "storage.cdrom.cdr", TRUE);
break;
case 0x0a:
libhal_changeset_set_property_bool (cs, "storage.cdrom.cdrw", TRUE);
break;
case 0x10:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvd", TRUE);
break;
case 0x11:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdr", TRUE);
break;
case 0x12:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdram", TRUE);
break;
case 0x13:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdrw", TRUE);
break;
case 0x14:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdrw", TRUE);
break;
case 0x1a:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusrw", TRUE);
break;
case 0x1b:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusr", TRUE);
break;
case 0x2b:
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusrdl", TRUE);
break;
case 0x40:
libhal_changeset_set_property_bool (cs, "storage.cdrom.bd", TRUE);
break;
case 0x41:
case 0x42:
libhal_changeset_set_property_bool (cs, "storage.cdrom.bdr", TRUE);
break;
case 0x43:
libhal_changeset_set_property_bool (cs, "storage.cdrom.bdre", TRUE);
break;
case 0x50:
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvd", TRUE);
break;
case 0x51:
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvdr", TRUE);
break;
case 0x52:
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvdrw", TRUE);
break;
}
return CDUTIL_WALK_CONTINUE;
}
#define WSPLEN 64
static void
get_cdrom_properties (int fd, LibHalChangeSet *cs)
{
DBusError error;
int capabilities;
int read_speed, write_speed;
intlist_t *write_speeds, *write_speeds_mem, *sp;
int n_wspeeds;
char **wspeeds;
char *wspeeds_mem;
int i;
libhal_changeset_set_property_bool (cs, "storage.cdrom.cdr", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.cdrw", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvd", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdr", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdrw", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdram", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusr", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusrw", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.dvdplusrdl", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.bd", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.bdr", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.bdre", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvd", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvdr", FALSE);
libhal_changeset_set_property_bool (cs, "storage.cdrom.hddvdrw", FALSE);
walk_profiles(fd, get_cdrom_properties_walker, cs);
/* XXX */
libhal_changeset_set_property_bool (cs, "storage.cdrom.support_media_changed", TRUE);
get_read_write_speeds(fd, &read_speed, &write_speed, &write_speeds, &n_wspeeds, &write_speeds_mem);
libhal_changeset_set_property_int (cs, "storage.cdrom.read_speed", read_speed);
libhal_changeset_set_property_int (cs, "storage.cdrom.write_speed", write_speed);
if (n_wspeeds <= 0) {
wspeeds_mem = NULL;
libhal_changeset_set_property_strlist (cs, "storage.cdrom.write_speeds", (const char **)&wspeeds_mem);
return;
}
if ((wspeeds = (char **)calloc(n_wspeeds + 1, sizeof (char *))) == NULL) {
free (write_speeds_mem);
return;
}
if ((wspeeds_mem = (char *)calloc(n_wspeeds, WSPLEN)) == NULL) {
free (wspeeds);
free (write_speeds_mem);
return;
}
for (i = 0; i < n_wspeeds; i++) {
wspeeds[i] = &wspeeds_mem[i * WSPLEN];
}
for (sp = write_speeds, i = 0; sp != NULL; sp = sp->next, i++) {
snprintf (wspeeds[i], WSPLEN, "%d", sp->val);
}
libhal_changeset_set_property_strlist (cs, "storage.cdrom.write_speeds", (const char **)wspeeds);
free (wspeeds);
free (wspeeds_mem);
free (write_speeds_mem);
}
/*
* Return a copy of a string without trailing spaces. If 'len' is non-zero,
* it specifies max length, otherwise the string must be null-terminated.
*/
char *
rtrim_copy(char *src, int len)
{
char *dst, *p;
if (len == 0) {
len = strlen(src);
}
if ((dst = calloc(1, len + 1)) != NULL) {
strncpy(dst, src, len);
p = dst + len - 1;
while ((p >= dst) && (isspace(*p))) {
*p-- = '\0';
}
}
return (dst);
}
static void
get_disk_properties (int fd, LibHalChangeSet *cs)
{
struct scsi_inquiry inq;
struct uscsi_cmd ucmd;
union scsi_cdb cdb;
int status;
char *s;
/* INQUIRY */
(void) memset((void *) &inq, 0, sizeof (inq));
(void) memset((void *) &ucmd, 0, sizeof (ucmd));
(void) memset((void *) &cdb, 0, sizeof (union scsi_cdb));
cdb.scc_cmd = SCMD_INQUIRY;
FORMG0COUNT(&cdb, sizeof (inq));
ucmd.uscsi_cdb = (caddr_t) & cdb;
ucmd.uscsi_cdblen = CDB_GROUP0;
ucmd.uscsi_bufaddr = (caddr_t) & inq;
ucmd.uscsi_buflen = sizeof (inq);
ucmd.uscsi_timeout = 30;
ucmd.uscsi_flags = USCSI_READ;
status = ioctl(fd, USCSICMD, &ucmd);
if (status || ucmd.uscsi_status) {
return;
}
if ((s = rtrim_copy(inq.inq_vid, sizeof (inq.inq_vid))) != NULL) {
libhal_changeset_set_property_string (cs, "storage.vendor", s);
free(s);
}
if ((s = rtrim_copy(inq.inq_pid, sizeof (inq.inq_pid))) != NULL) {
libhal_changeset_set_property_string (cs, "storage.model", s);
free(s);
}
if ((s = rtrim_copy(inq.inq_revision, sizeof (inq.inq_revision))) != NULL) {
libhal_changeset_set_property_string (cs, "storage.firmware_revision", s);
free(s);
}
if ((s = rtrim_copy(inq.inq_serial, sizeof (inq.inq_serial))) != NULL) {
libhal_changeset_set_property_string (cs, "storage.serial", s);
free(s);
}
}
void
drop_privileges ()
{
priv_set_t *pPrivSet = NULL;
priv_set_t *lPrivSet = NULL;
/*
* Start with the 'basic' privilege set and then remove any
* of the 'basic' privileges that will not be needed.
*/
if ((pPrivSet = priv_str_to_set("basic", ",", NULL)) == NULL) {
return;
}
/* Clear privileges we will not need from the 'basic' set */
(void) priv_delset(pPrivSet, PRIV_FILE_LINK_ANY);
(void) priv_delset(pPrivSet, PRIV_PROC_INFO);
(void) priv_delset(pPrivSet, PRIV_PROC_SESSION);
(void) priv_delset(pPrivSet, PRIV_PROC_EXEC);
(void) priv_delset(pPrivSet, PRIV_PROC_FORK);
/* for uscsi */
(void) priv_addset(pPrivSet, PRIV_SYS_DEVICES);
/* to open logindevperm'd devices */
(void) priv_addset(pPrivSet, PRIV_FILE_DAC_READ);
/* Set the permitted privilege set. */
if (setppriv(PRIV_SET, PRIV_PERMITTED, pPrivSet) != 0) {
return;
}
/* Clear the limit set. */
if ((lPrivSet = priv_allocset()) == NULL) {
return;
}
priv_emptyset(lPrivSet);
if (setppriv(PRIV_SET, PRIV_LIMIT, lPrivSet) != 0) {
return;
}
priv_freeset(lPrivSet);
}
int
main (int argc, char *argv[])
{
int ret = 1;
int fd = -1;
int rfd = -1;
char *udi;
char *device_file;
char *raw_device_file;
LibHalContext *ctx = NULL;
DBusError error;
char *drive_type;
dbus_bool_t is_cdrom;
struct dk_minfo minfo;
int rdonly;
unsigned int block_size = 512;
dbus_bool_t only_check_for_media;
int got_media = FALSE;
dbus_bool_t is_write_protected = FALSE;
dbus_bool_t is_mbr = FALSE;
dbus_bool_t is_smi = FALSE;
dbus_bool_t is_gpt = FALSE;
dbus_bool_t is_partitioned = FALSE;
dbus_bool_t vtoc_slices = FALSE;
int dos_cnt = 0;
const char *scheme = "";
struct extvtoc vtoc;
dk_gpt_t *gpt;
LibHalChangeSet *cs = NULL;
if ((udi = getenv ("UDI")) == NULL)
goto out;
if ((device_file = getenv ("HAL_PROP_BLOCK_DEVICE")) == NULL)
goto out;
if ((raw_device_file = getenv ("HAL_PROP_BLOCK_SOLARIS_RAW_DEVICE")) == NULL)
goto out;
if ((drive_type = getenv ("HAL_PROP_STORAGE_DRIVE_TYPE")) == NULL)
goto out;
drop_privileges ();
setup_logger ();
if (argc == 2 && strcmp (argv[1], "--only-check-for-media") == 0)
only_check_for_media = TRUE;
else
only_check_for_media = FALSE;
is_cdrom = (strcmp (drive_type, "cdrom") == 0);
dbus_error_init (&error);
if ((ctx = libhal_ctx_init_direct (&error)) == NULL)
goto out;
if ((cs = libhal_device_new_changeset (udi)) == NULL) {
HAL_DEBUG (("Cannot allocate changeset"));
goto out;
}
HAL_DEBUG (("Doing probe-storage for %s (drive_type %s) (udi=%s) (--only-check-for-media==%d)",
device_file, drive_type, udi, only_check_for_media));
if ((rfd = open (raw_device_file, O_RDONLY | O_NONBLOCK)) < 0) {
HAL_DEBUG (("Cannot open %s: %s", raw_device_file, strerror (errno)));
goto out;
}
if (!only_check_for_media) {
if (strcmp (drive_type, "cdrom") == 0) {
get_cdrom_properties (rfd, cs);
} else if (strcmp (drive_type, "disk") == 0) {
get_disk_properties (rfd, cs);
}
}
ret = 0;
if (is_cdrom) {
HAL_DEBUG (("Checking for optical disc on %s", raw_device_file));
got_media = get_media_info(rfd, &minfo);
if (!got_media) {
goto out_cs;
}
block_size = minfo.dki_lbsize;
/* XXX */
is_write_protected = TRUE;
} else {
got_media = get_media_info(rfd, &minfo);
if (!got_media) {
goto out_cs;
}
block_size = minfo.dki_lbsize;
if ((ioctl(rfd, DKIOCREADONLY, &rdonly) == 0) && rdonly) {
is_write_protected = TRUE;
}
}
HAL_DEBUG (("Checking for partitions on %s", device_file));
if ((fd = open (device_file, O_RDONLY | O_NONBLOCK)) < 0) {
HAL_DEBUG (("Cannot open %s: %s", device_file, strerror (errno)));
goto out_cs;
}
dos_cnt = get_num_dos_drives(fd, block_size);
is_mbr = (dos_cnt > 0);
if (is_mbr) {
scheme = "mbr";
}
if (read_extvtoc(rfd, &vtoc) >= 0) {
if (!vtoc_one_slice_entire_disk(&vtoc)) {
is_smi = TRUE;
if (!is_mbr) {
/* smi within mbr partition is okay */
scheme = "smi";
}
vtoc_slices = TRUE;
}
} else if (!is_cdrom && (efi_alloc_and_read(rfd, &gpt) >= 0)) {
/*
* Note: for some reason efi_read takes very long on cdroms.
* Needs more investigation, skip gpt on cdrom for now.
*/
is_gpt = TRUE;
scheme = "gpt";
efi_free(gpt);
}
out_cs:
is_partitioned = is_mbr || is_smi || is_gpt;
libhal_changeset_set_property_bool (cs, "storage.no_partitions_hint", !is_partitioned);
libhal_changeset_set_property_bool (cs, "block.no_partitions", !is_partitioned);
libhal_changeset_set_property_string (cs, "storage.partitioning_scheme", scheme);
libhal_changeset_set_property_bool (cs, "storage.solaris.vtoc_slices", vtoc_slices);
libhal_changeset_set_property_int (cs, "storage.solaris.num_dos_partitions", dos_cnt);
/* XXX should only set for removable drives */
libhal_changeset_set_property_bool (cs, "storage.removable.media_available", got_media);
libhal_changeset_set_property_bool (cs, "storage.removable.solaris.read_only", is_write_protected);
libhal_device_commit_changeset (ctx, cs, &error);
out:
if (cs != NULL) {
libhal_device_free_changeset (cs);
}
if (fd >= 0) {
close (fd);
}
if (rfd >= 0) {
close (rfd);
}
if (ctx != NULL) {
if (dbus_error_is_set(&error)) {
dbus_error_free (&error);
}
libhal_ctx_shutdown (ctx, &error);
libhal_ctx_free (ctx);
}
return ret;
}