/*
* cdrom_id - optical drive and media information prober
*
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <fcntl.h>
#include <errno.h>
#include <getopt.h>
+#include <time.h>
#include <scsi/sg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/cdrom.h>
-#include "../../udev/udev.h"
+#include "libudev.h"
+#include "libudev-private.h"
static int debug;
}
/* device info */
-static unsigned int cd_cd_rom;
-static unsigned int cd_cd_r;
-static unsigned int cd_cd_rw;
-static unsigned int cd_dvd_rom;
-static unsigned int cd_dvd_r;
-static unsigned int cd_dvd_rw;
-static unsigned int cd_dvd_ram;
-static unsigned int cd_dvd_plus_r;
-static unsigned int cd_dvd_plus_rw;
-static unsigned int cd_dvd_plus_r_dl;
-static unsigned int cd_dvd_plus_rw_dl;
-static unsigned int cd_bd;
-static unsigned int cd_bd_r;
-static unsigned int cd_bd_re;
-static unsigned int cd_hddvd;
-static unsigned int cd_hddvd_r;
-static unsigned int cd_hddvd_rw;
-static unsigned int cd_mo;
-static unsigned int cd_mrw;
-static unsigned int cd_mrw_w;
+static unsigned int cd_cd_rom = 0;
+static unsigned int cd_cd_r = 0;
+static unsigned int cd_cd_rw = 0;
+static unsigned int cd_dvd_rom = 0;
+static unsigned int cd_dvd_r = 0;
+static unsigned int cd_dvd_rw = 0;
+static unsigned int cd_dvd_ram = 0;
+static unsigned int cd_dvd_plus_r = 0;
+static unsigned int cd_dvd_plus_rw = 0;
+static unsigned int cd_dvd_plus_r_dl = 0;
+static unsigned int cd_dvd_plus_rw_dl = 0;
+static unsigned int cd_bd = 0;
+static unsigned int cd_bd_r = 0;
+static unsigned int cd_bd_re = 0;
+static unsigned int cd_hddvd = 0;
+static unsigned int cd_hddvd_r = 0;
+static unsigned int cd_hddvd_rw = 0;
+static unsigned int cd_mo = 0;
+static unsigned int cd_mrw = 0;
+static unsigned int cd_mrw_w = 0;
/* media info */
-static unsigned int cd_media_cd_rom;
-static unsigned int cd_media_cd_r;
-static unsigned int cd_media_cd_rw;
-static unsigned int cd_media_dvd_rom;
-static unsigned int cd_media_dvd_r;
-static unsigned int cd_media_dvd_rw;
-static unsigned int cd_media_dvd_ram;
-static unsigned int cd_media_dvd_plus_r;
-static unsigned int cd_media_dvd_plus_rw;
-static unsigned int cd_media_dvd_plus_r_dl;
-static unsigned int cd_media_dvd_plus_rw_dl;
-static unsigned int cd_media_bd;
-static unsigned int cd_media_bd_r;
-static unsigned int cd_media_bd_re;
-static unsigned int cd_media_hddvd;
-static unsigned int cd_media_hddvd_r;
-static unsigned int cd_media_hddvd_rw;
-static unsigned int cd_media_mo;
-static unsigned int cd_media_mrw;
-static unsigned int cd_media_mrw_w;
-
-static const char *cd_media_state;
-static unsigned int cd_media_session_next;
-static unsigned int cd_media_session_count;
-static unsigned int cd_media_track_count;
-static unsigned int cd_media_track_count_data;
-static unsigned int cd_media_track_count_audio;
-static unsigned long long int cd_media_session_last_offset;
+static unsigned int cd_media = 0;
+static unsigned int cd_media_cd_rom = 0;
+static unsigned int cd_media_cd_r = 0;
+static unsigned int cd_media_cd_rw = 0;
+static unsigned int cd_media_dvd_rom = 0;
+static unsigned int cd_media_dvd_r = 0;
+static unsigned int cd_media_dvd_rw = 0;
+static unsigned int cd_media_dvd_ram = 0;
+static unsigned int cd_media_dvd_plus_r = 0;
+static unsigned int cd_media_dvd_plus_rw = 0;
+static unsigned int cd_media_dvd_plus_r_dl = 0;
+static unsigned int cd_media_dvd_plus_rw_dl = 0;
+static unsigned int cd_media_bd = 0;
+static unsigned int cd_media_bd_r = 0;
+static unsigned int cd_media_bd_re = 0;
+static unsigned int cd_media_hddvd = 0;
+static unsigned int cd_media_hddvd_r = 0;
+static unsigned int cd_media_hddvd_rw = 0;
+static unsigned int cd_media_mo = 0;
+static unsigned int cd_media_mrw = 0;
+static unsigned int cd_media_mrw_w = 0;
+
+static const char *cd_media_state = NULL;
+static unsigned int cd_media_session_next = 0;
+static unsigned int cd_media_session_count = 0;
+static unsigned int cd_media_track_count = 0;
+static unsigned int cd_media_track_count_data = 0;
+static unsigned int cd_media_track_count_audio = 0;
+static unsigned long long int cd_media_session_last_offset = 0;
#define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
#define SK(errcode) (((errcode) >> 16) & 0xF)
#define ASC(errcode) (((errcode) >> 8) & 0xFF)
#define ASCQ(errcode) ((errcode) & 0xFF)
+static int is_mounted(const char *device)
+{
+ struct stat statbuf;
+ FILE *fp;
+ int maj, min;
+ int mounted = 0;
+
+ if (stat(device, &statbuf) < 0)
+ return -ENODEV;
+
+ fp = fopen("/proc/self/mountinfo", "r");
+ if (fp == NULL)
+ return -ENOSYS;
+ while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
+ if (makedev(maj, min) == statbuf.st_rdev) {
+ mounted = 1;
+ break;
+ }
+ }
+ fclose(fp);
+ return mounted;
+}
+
static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
{
if (err == -1) {
static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg)
{
if (i == 0) {
- memset(cmd, 0x00, sizeof(struct scsi_cmd));
+ memset(cmd, 0, sizeof(struct scsi_cmd));
cmd->cgc.quiet = 1;
cmd->cgc.sense = &cmd->_sense.s;
memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
static int cd_capability_compat(struct udev *udev, int fd)
{
- int capabilty;
+ int capability;
- capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
- if (capabilty < 0) {
+ capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
+ if (capability < 0) {
info(udev, "CDROM_GET_CAPABILITY failed\n");
return -1;
}
- if (capabilty & CDC_CD_R)
+ if (capability & CDC_CD_R)
cd_cd_r = 1;
- if (capabilty & CDC_CD_RW)
+ if (capability & CDC_CD_RW)
cd_cd_rw = 1;
- if (capabilty & CDC_DVD)
+ if (capability & CDC_DVD)
cd_dvd_rom = 1;
- if (capabilty & CDC_DVD_R)
+ if (capability & CDC_DVD_R)
cd_dvd_r = 1;
- if (capabilty & CDC_DVD_RAM)
+ if (capability & CDC_DVD_RAM)
cd_dvd_ram = 1;
- if (capabilty & CDC_MRW)
+ if (capability & CDC_MRW)
cd_mrw = 1;
- if (capabilty & CDC_MRW_W)
+ if (capability & CDC_MRW_W)
cd_mrw_w = 1;
return 0;
}
+static int cd_media_compat(struct udev *udev, int fd)
+{
+ if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
+ info(udev, "CDROM_DRIVE_STATUS != CDS_DISC_OK\n");
+ return -1;
+ }
+ cd_media = 1;
+ return 0;
+}
+
static int cd_inquiry(struct udev *udev, int fd) {
struct scsi_cmd sc;
unsigned char inq[128];
int err;
+ memset(inq, 0, sizeof(inq));
scsi_cmd_set(udev, &sc, 0, 0x12);
scsi_cmd_set(udev, &sc, 4, 36);
scsi_cmd_set(udev, &sc, 5, 0);
unsigned int i;
int err;
+ memset(header, 0, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 1, 0);
scsi_cmd_set(udev, &sc, 8, sizeof(header));
return -1;
}
+ memset(profiles, 0, sizeof(profiles));
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 1, 1);
scsi_cmd_set(udev, &sc, 6, len >> 16);
return -1;
}
+ cd_media = 1;
+
switch (cur_profile) {
case 0x03:
case 0x04:
};
int err;
+ memset(header, 0, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x51);
scsi_cmd_set(udev, &sc, 8, sizeof(header));
scsi_cmd_set(udev, &sc, 9, 0);
info(udev, "disk type %02x\n", header[8]);
- if ((header[2] & 3) < 4)
+ /* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
+ if (!cd_media_cd_rom && (header[2] & 3) < 4)
cd_media_state = media_status[header[2] & 3];
+
if ((header[2] & 3) != 2)
cd_media_session_next = header[10] << 8 | header[5];
cd_media_session_count = header[9] << 8 | header[4];
unsigned char *p;
int err;
+ memset(header, 0, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 6, 1);
scsi_cmd_set(udev, &sc, 8, sizeof(header));
if (len < 8)
return 0;
+ memset(toc, 0, sizeof(toc));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
scsi_cmd_set(udev, &sc, 7, len >> 8);
cd_media_track_count_audio++;
}
+ memset(header, 0, sizeof (header));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
scsi_cmd_set(udev, &sc, 8, 12);
const char *node = NULL;
int export = 0;
int fd = -1;
+ int cnt;
int rc = 0;
udev = udev_new();
if (udev == NULL)
goto exit;
- logging_init("cdrom_id");
+ udev_log_init("cdrom_id");
udev_set_log_fn(udev, log_fn);
while (1) {
goto exit;
}
- fd = open(node, O_RDONLY | O_NONBLOCK);
+ srand((unsigned int)getpid());
+ for (cnt = 20; cnt > 0; cnt--) {
+ struct timespec duration;
+
+ fd = open(node, O_RDONLY|O_NONBLOCK|(is_mounted(node) ? 0 : O_EXCL));
+ if (fd >= 0 || errno != EBUSY)
+ break;
+ duration.tv_sec = 0;
+ duration.tv_nsec = (100 * 1000 * 1000) + (rand() % 100 * 1000 * 1000);
+ nanosleep(&duration, NULL);
+ }
if (fd < 0) {
info(udev, "unable to open '%s'\n", node);
+ fprintf(stderr, "unable to open '%s'\n", node);
rc = 1;
goto exit;
}
goto exit;
}
- /* check drive */
+ /* check for media - don't bail if there's no media as we still need to
+ * to read profiles */
+ cd_media_compat(udev, fd);
+
+ /* check if drive talks MMC */
if (cd_inquiry(udev, fd) < 0)
goto print;
if (cd_mrw_w)
printf("ID_CDROM_MRW_W=1\n");
+ if (cd_media)
+ printf("ID_CDROM_MEDIA=1\n");
if (cd_media_mo)
printf("ID_CDROM_MEDIA_MO=1\n");
if (cd_media_mrw)
if (fd >= 0)
close(fd);
udev_unref(udev);
- logging_close();
+ udev_log_close();
return rc;
}