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-rw-r--r--extras/cdrom_id/60-cdrom_id.rules12
-rw-r--r--extras/cdrom_id/cdrom_id.c124
2 files changed, 105 insertions, 31 deletions
diff --git a/extras/cdrom_id/60-cdrom_id.rules b/extras/cdrom_id/60-cdrom_id.rules
index 1ad1d0cc23..896af34825 100644
--- a/extras/cdrom_id/60-cdrom_id.rules
+++ b/extras/cdrom_id/60-cdrom_id.rules
@@ -5,10 +5,14 @@ SUBSYSTEM!="block", GOTO="cdrom_end"
KERNEL!="sr[0-9]*|xvd*", GOTO="cdrom_end"
ENV{DEVTYPE}!="disk", GOTO="cdrom_end"
-# this is only a button press event
-ENV{DISK_EJECT_REQUEST}=="?*", GOTO="cdrom_end"
-
+# unconditionally tag device as CDROM
KERNEL=="sr[0-9]*", ENV{ID_CDROM}="1"
-IMPORT{program}="cdrom_id $tempnode"
+
+# media eject button pressed
+ENV{DISK_EJECT_REQUEST}=="?*", RUN+="cdrom_id --eject-media $tempnode", GOTO="cdrom_end"
+
+# import device and media properties and lock tray to
+# enable the receiving of media eject button events
+IMPORT{program}="cdrom_id --lock-media $tempnode"
LABEL="cdrom_end"
diff --git a/extras/cdrom_id/cdrom_id.c b/extras/cdrom_id/cdrom_id.c
index 7908f6d19a..664a00d2c7 100644
--- a/extras/cdrom_id/cdrom_id.c
+++ b/extras/cdrom_id/cdrom_id.c
@@ -41,7 +41,7 @@
#include "libudev.h"
#include "libudev-private.h"
-static int debug;
+static bool debug;
static void log_fn(struct udev *udev, int priority,
const char *file, int line, const char *fn,
@@ -156,13 +156,11 @@ struct scsi_cmd {
struct sg_io_hdr sg_io;
};
-static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd, unsigned char *buf, size_t bufsize)
+static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd)
{
memset(cmd, 0x00, sizeof(struct scsi_cmd));
- memset(buf, 0x00, bufsize);
cmd->cgc.quiet = 1;
cmd->cgc.sense = &cmd->_sense.s;
- memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
cmd->sg_io.interface_id = 'S';
cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
cmd->sg_io.cmdp = cmd->cgc.cmd;
@@ -182,9 +180,13 @@ static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigne
{
int ret = 0;
- cmd->sg_io.dxferp = buf;
- cmd->sg_io.dxfer_len = bufsize;
- cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
+ if (bufsize > 0) {
+ cmd->sg_io.dxferp = buf;
+ cmd->sg_io.dxfer_len = bufsize;
+ cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
+ } else {
+ cmd->sg_io.dxfer_direction = SG_DXFER_NONE;
+ }
if (ioctl(fd, SG_IO, &cmd->sg_io))
return -1;
@@ -200,6 +202,39 @@ static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigne
return ret;
}
+static int media_lock(struct udev *udev, int fd, bool lock)
+{
+ int err;
+
+ /* disable the kernel's lock logic */
+ err = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK);
+ if (err < 0)
+ info(udev, "CDROM_CLEAR_OPTIONS, CDO_LOCK failed\n");
+
+ err = ioctl(fd, CDROM_LOCKDOOR, lock ? 1 : 0);
+ if (err < 0)
+ info(udev, "CDROM_LOCKDOOR failed\n");
+
+ return err;
+}
+
+static int media_eject(struct udev *udev, int fd)
+{
+ struct scsi_cmd sc;
+ int err;
+
+ scsi_cmd_init(udev, &sc);
+ scsi_cmd_set(udev, &sc, 0, 0x1b);
+ scsi_cmd_set(udev, &sc, 4, 0x02);
+ scsi_cmd_set(udev, &sc, 5, 0);
+ err = scsi_cmd_run(udev, &sc, fd, NULL, 0);
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "START_STOP_UNIT", err);
+ return -1;
+ }
+ return 0;
+}
+
static int cd_capability_compat(struct udev *udev, int fd)
{
int capability;
@@ -237,12 +272,13 @@ static int cd_media_compat(struct udev *udev, int fd)
return 0;
}
-static int cd_inquiry(struct udev *udev, int fd) {
+static int cd_inquiry(struct udev *udev, int fd)
+{
struct scsi_cmd sc;
unsigned char inq[128];
int err;
- scsi_cmd_init(udev, &sc, inq, sizeof(inq));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x12);
scsi_cmd_set(udev, &sc, 4, 36);
scsi_cmd_set(udev, &sc, 5, 0);
@@ -467,7 +503,7 @@ static int cd_profiles_old_mmc(struct udev *udev, int fd)
unsigned char header[32];
- scsi_cmd_init(udev, &sc, header, sizeof(header));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x51);
scsi_cmd_set(udev, &sc, 8, sizeof(header));
scsi_cmd_set(udev, &sc, 9, 0);
@@ -513,7 +549,7 @@ static int cd_profiles(struct udev *udev, int fd)
ret = -1;
/* First query the current profile */
- scsi_cmd_init(udev, &sc, features, sizeof(features));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 8, 8);
scsi_cmd_set(udev, &sc, 9, 0);
@@ -549,7 +585,7 @@ static int cd_profiles(struct udev *udev, int fd)
}
/* Now get the full feature buffer */
- scsi_cmd_init(udev, &sc, features, len);
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 7, ( len >> 8 ) & 0xff);
scsi_cmd_set(udev, &sc, 8, len & 0xff);
@@ -601,7 +637,7 @@ static int cd_media_info(struct udev *udev, int fd)
};
int err;
- scsi_cmd_init(udev, &sc, header, sizeof(header));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x51);
scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
scsi_cmd_set(udev, &sc, 9, 0);
@@ -639,7 +675,7 @@ static int cd_media_info(struct udev *udev, int fd)
unsigned char dvdstruct[8];
unsigned char format[12];
- scsi_cmd_init(udev, &sc, dvdstruct, sizeof(dvdstruct));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0xAD);
scsi_cmd_set(udev, &sc, 7, 0xC0);
scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct));
@@ -656,7 +692,7 @@ static int cd_media_info(struct udev *udev, int fd)
}
/* let's make sure we don't try to read unformatted media */
- scsi_cmd_init(udev, &sc, format, sizeof(format));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x23);
scsi_cmd_set(udev, &sc, 8, sizeof(format));
scsi_cmd_set(udev, &sc, 9, 0);
@@ -697,7 +733,7 @@ static int cd_media_info(struct udev *udev, int fd)
* has "blank" status", DVD-RAM was examined earlier) and check
* for ISO and UDF PVDs or a fs superblock presence and do it
* in one ioctl (we need just sectors 0 and 16) */
- scsi_cmd_init(udev, &sc, buffer, sizeof(buffer));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x28);
scsi_cmd_set(udev, &sc, 5, 0);
scsi_cmd_set(udev, &sc, 8, 32);
@@ -750,7 +786,7 @@ static int cd_media_toc(struct udev *udev, int fd)
unsigned char *p;
int err;
- scsi_cmd_init(udev, &sc, header, sizeof(header));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 6, 1);
scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
@@ -774,7 +810,7 @@ static int cd_media_toc(struct udev *udev, int fd)
if (len < 8)
return 0;
- scsi_cmd_init(udev, &sc, toc, sizeof(toc));
+ scsi_cmd_init(udev, &sc);
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) & 0xff);
@@ -805,7 +841,7 @@ static int cd_media_toc(struct udev *udev, int fd)
cd_media_track_count_audio++;
}
- scsi_cmd_init(udev, &sc, header, sizeof(header));
+ scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
scsi_cmd_set(udev, &sc, 8, sizeof(header));
@@ -825,10 +861,16 @@ int main(int argc, char *argv[])
{
struct udev *udev;
static const struct option options[] = {
+ { "lock-media", no_argument, NULL, 'l' },
+ { "unlock-media", no_argument, NULL, 'u' },
+ { "eject-media", no_argument, NULL, 'e' },
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{}
};
+ bool eject = false;
+ bool lock = false;
+ bool unlock = false;
const char *node = NULL;
int fd = -1;
int cnt;
@@ -844,18 +886,30 @@ int main(int argc, char *argv[])
while (1) {
int option;
- option = getopt_long(argc, argv, "dh", options, NULL);
+ option = getopt_long(argc, argv, "deluh", options, NULL);
if (option == -1)
break;
switch (option) {
+ case 'l':
+ lock = true;
+ break;
+ case 'u':
+ unlock = true;
+ break;
+ case 'e':
+ eject = true;
+ break;
case 'd':
- debug = 1;
+ debug = true;
if (udev_get_log_priority(udev) < LOG_INFO)
udev_set_log_priority(udev, LOG_INFO);
break;
case 'h':
printf("Usage: cdrom_id [options] <device>\n"
+ " --lock-media lock the media (to enable eject request events)\n"
+ " --unlock-media unlock the media\n"
+ " --eject-media eject the media\n"
" --debug debug to stderr\n"
" --help print this help text\n\n");
goto exit;
@@ -904,14 +958,13 @@ int main(int argc, char *argv[])
/* check if drive talks MMC */
if (cd_inquiry(udev, fd) < 0)
- goto print;
+ goto work;
/* read drive and possibly current profile */
if (cd_profiles(udev, fd) != 0)
- goto print;
+ goto work;
- /* at this point we are guaranteed to have media in the
- * drive - find out more about it */
+ /* at this point we are guaranteed to have media in the drive - find out more about it */
/* get session/track info */
cd_media_toc(udev, fd);
@@ -919,7 +972,25 @@ int main(int argc, char *argv[])
/* get writable media state */
cd_media_info(udev, fd);
-print:
+work:
+ /* lock the media, so we enable eject button events */
+ if (lock && cd_media) {
+ info(udev, "PREVENT_ALLOW_MEDIUM_REMOVAL (lock)\n");
+ media_lock(udev, fd, true);
+ }
+
+ if (unlock && cd_media) {
+ info(udev, "PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)\n");
+ media_lock(udev, fd, false);
+ }
+
+ if (eject) {
+ info(udev, "PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)\n");
+ media_lock(udev, fd, false);
+ info(udev, "START_STOP_UNIT (eject)\n");
+ media_eject(udev, fd);
+ }
+
printf("ID_CDROM=1\n");
if (cd_cd_rom)
printf("ID_CDROM_CD=1\n");
@@ -1026,4 +1097,3 @@ exit:
udev_log_close();
return rc;
}
-
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-26 21:41:12 +0000