diff options
| -rw-r--r-- | include/usage.h | 3 | ||||
| -rw-r--r-- | miscutils/Config.in | 8 | ||||
| -rw-r--r-- | miscutils/eject.c | 87 | ||||
| -rw-r--r-- | scripts/defconfig | 1 |
4 files changed, 82 insertions, 17 deletions
diff --git a/include/usage.h b/include/usage.h index fb88e9b..9ae7d98 100644 --- a/include/usage.h +++ b/include/usage.h @@ -881,6 +881,9 @@ USE_FEATURE_BRCTL_FANCY("\n" \ #define eject_full_usage \ "Eject specified DEVICE (or default /dev/cdrom)" \ "\n\nOptions:\n" \ + USE_FEATURE_EJECT_SCSI( \ + " -s scsi device\n" \ + ) \ " -t Close tray\n" \ " -T Open/close tray (toggle)" diff --git a/miscutils/Config.in b/miscutils/Config.in index e6c6504..d64d053 100644 --- a/miscutils/Config.in +++ b/miscutils/Config.in @@ -126,6 +126,14 @@ config EJECT help Used to eject cdroms. (defaults to /dev/cdrom) +config FEATURE_EJECT_SCSI + bool "eject scsi support" + default n + depends on EJECT + help + Add the -s option to eject, this allows to eject SCSI-Devices and + usb-storage devices. + config LAST bool "last" default n diff --git a/miscutils/eject.c b/miscutils/eject.c index 99f01ab..746a018 100644 --- a/miscutils/eject.c +++ b/miscutils/eject.c @@ -25,33 +25,86 @@ #define FLAG_CLOSE 1 #define FLAG_SMART 2 + +/* Code taken from the original eject (http://eject.sourceforge.net/), + * refactored it a bit for busybox (ne-bb@nicoerfurth.de) */ +#define FLAG_SCSI 4 + +#include <scsi/sg.h> +#include <scsi/scsi.h> +static void eject_scsi(const int fd, const char * const dev) +{ + int i; + unsigned char sense_buffer[32]; + unsigned char inqBuff[2]; + sg_io_hdr_t io_hdr; + char sg_commands[3][6] = { + {ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0}, + {START_STOP, 0, 0, 0, 1, 0}, + {START_STOP, 0, 0, 0, 2, 0} + }; + + if ((ioctl(fd, SG_GET_VERSION_NUM, &i) < 0) || (i < 30000)) + bb_error_msg_and_die("not an sg device or old sg driver"); + + memset(&io_hdr, 0, sizeof(sg_io_hdr_t)); + io_hdr.interface_id = 'S'; + io_hdr.cmd_len = 6; + io_hdr.mx_sb_len = sizeof(sense_buffer); + io_hdr.dxfer_direction = SG_DXFER_NONE; + /* io_hdr.dxfer_len = 0; */ + io_hdr.dxferp = inqBuff; + io_hdr.sbp = sense_buffer; + io_hdr.timeout = 2000; + + for (i=0; i < 3; i++) { + io_hdr.cmdp = sg_commands[i]; + ioctl_or_perror_and_die(fd, SG_IO, (void *)&io_hdr, "%s", dev); + } + + /* force kernel to reread partition table when new disc inserted */ + ioctl(fd, BLKRRPART); +} + +static void eject_cdrom(const int fd, const unsigned long flags, + const char * const dev) +{ + int cmd = CDROMEJECT; + + if (flags & FLAG_CLOSE + || (flags & FLAG_SMART && ioctl(fd, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN)) + cmd = CDROMCLOSETRAY; + + return ioctl_or_perror_and_die(fd, cmd, NULL, "%s", dev); +} + int eject_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int eject_main(int argc, char **argv) { unsigned long flags; const char *device; - int dev, cmd; + int dev; opt_complementary = "?1:t--T:T--t"; - flags = getopt32(argv, "tT"); - device = argv[optind] ? : "/dev/cdrom"; - - // We used to do "umount <device>" here, but it was buggy - // if something was mounted OVER cdrom and - // if cdrom is mounted many times. - // - // This works equally well (or better): - // #!/bin/sh - // umount /dev/cdrom - // eject + flags = getopt32(argv, "tT" USE_FEATURE_EJECT_SCSI("s")); + device = argv[optind] ? argv[optind] : "/dev/cdrom"; + + /* We used to do "umount <device>" here, but it was buggy + if something was mounted OVER cdrom and + if cdrom is mounted many times. + + This works equally well (or better): + #!/bin/sh + umount /dev/cdrom + eject + */ dev = xopen(device, O_RDONLY|O_NONBLOCK); - cmd = CDROMEJECT; - if (flags & FLAG_CLOSE - || (flags & FLAG_SMART && ioctl(dev, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN)) - cmd = CDROMCLOSETRAY; - ioctl_or_perror_and_die(dev, cmd, NULL, "%s", device); + if (ENABLE_FEATURE_EJECT_SCSI && (flags & FLAG_SCSI)) + eject_scsi(dev, device); + else + eject_cdrom(dev, flags, device); if (ENABLE_FEATURE_CLEAN_UP) close(dev); diff --git a/scripts/defconfig b/scripts/defconfig index 35cec96..31a172c 100644 --- a/scripts/defconfig +++ b/scripts/defconfig @@ -512,6 +512,7 @@ CONFIG_DC=y # CONFIG_DEVFSD_VERBOSE is not set # CONFIG_FEATURE_DEVFS is not set CONFIG_EJECT=y +CONFIG_FEATURE_EJECT_SCSI=y CONFIG_LAST=y CONFIG_LESS=y CONFIG_FEATURE_LESS_MAXLINES=9999999 |