Replaced some large local variables by other means in libburn/sg-linux.c
This commit is contained in:
parent
5e8e73d994
commit
bad7a81d0d
@ -1 +1 @@
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#define Cdrskin_timestamP "2011.06.02.132554"
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#define Cdrskin_timestamP "2011.06.05.170431"
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@ -237,6 +237,7 @@ static int linux_ata_enumerate_verbous = 0;
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#include "debug.h"
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#include "toc.h"
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#include "util.h"
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#include "init.h"
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#include "libdax_msgs.h"
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extern struct libdax_msgs *libdax_messenger;
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@ -343,7 +344,7 @@ static void sg_select_device_family(void)
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static int sg_exchange_scd_for_sr(char *fname, int flag)
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{
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struct stat stbuf;
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char scd[17], msg[160];
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char scd[17], *msg = NULL;
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if (burn_sg_use_family != 0 || strncmp(fname, "/dev/sr", 7)!=0 ||
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strlen(fname)>9 || strlen(fname)<8)
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@ -358,9 +359,14 @@ static int sg_exchange_scd_for_sr(char *fname, int flag)
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strcpy(scd + 8, fname + 7);
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if (stat(scd, &stbuf) == -1)
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return 2;
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msg = calloc(strlen(scd) + strlen(fname) + 80, 1);
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if (msg != NULL) {
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sprintf(msg, "%s substitutes for non-existent %s", scd, fname);
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libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
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LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH, msg, 0, 0);
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LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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msg, 0, 0);
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free(msg);
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}
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strcpy(fname, scd);
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return 1;
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}
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@ -384,10 +390,12 @@ static int sgio_test(int fd)
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/* ts A60924 */
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static int sg_handle_busy_device(char *fname, int os_errno)
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{
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char msg[4096];
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char *msg = NULL;
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struct stat stbuf;
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int looks_like_hd= 0, fd, ret;
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BURN_ALLOC_MEM(msg, char, 4096);
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/* ts A80713 :
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check existence of /dev/hdX1 as hint for hard disk rather than CD
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Hint by Giulio Orsero: check /proc/ide/hdX/media for "disk"
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@ -445,7 +453,10 @@ static int sg_handle_busy_device(char *fname, int os_errno)
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LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_LOW,
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msg, os_errno, 0);
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}
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return 1;
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ret = 1;
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ex:;
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BURN_FREE_MEM(msg);
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return ret;
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}
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@ -453,10 +464,11 @@ static int sg_handle_busy_device(char *fname, int os_errno)
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static int sg_close_drive_fd(char *fname, int driveno, int *fd, int sorry)
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{
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int ret, os_errno, sevno= LIBDAX_MSGS_SEV_DEBUG;
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char msg[4096+100];
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char *msg = NULL;
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if(*fd < 0)
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return(0);
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{ret = 0; goto ex;}
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BURN_ALLOC_MEM(msg, char, 4096 + 100);
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#ifdef CDROM_MEDIA_CHANGED_disabled_because_not_helpful
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#ifdef CDSL_CURRENT
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@ -484,7 +496,7 @@ static int sg_close_drive_fd(char *fname, int driveno, int *fd, int sorry)
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if(ret != -1) {
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/* ts A70409 : DDLP-B */
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/* >>> release single lock on fname */
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return 1;
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{ret = 1; goto ex;}
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}
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os_errno= errno;
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@ -493,7 +505,10 @@ static int sg_close_drive_fd(char *fname, int driveno, int *fd, int sorry)
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sevno = LIBDAX_MSGS_SEV_SORRY;
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libdax_msgs_submit(libdax_messenger, driveno, 0x00020002,
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sevno, LIBDAX_MSGS_PRIO_HIGH, msg, os_errno, 0);
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return 0;
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ret = 0;
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ex:;
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BURN_FREE_MEM(msg);
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return ret;
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}
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@ -658,23 +673,28 @@ static int sg_open_scsi_siblings(char *path, int driveno,
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{
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int tld, i, ret, fd, i_bus_no = -1;
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int i_host_no = -1, i_channel_no = -1, i_target_no = -1, i_lun_no = -1;
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char msg[161], fname[81];
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char *msg = NULL, fname[40];
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struct stat stbuf;
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dev_t last_rdev = 0, path_rdev;
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static char tldev[][81]= {"/dev/sr%d", "/dev/scd%d", "/dev/sg%d", ""};
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static char tldev[][20]= {"/dev/sr%d", "/dev/scd%d", "/dev/sg%d", ""};
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/* ts A70609: removed "/dev/st%d" */
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if (strlen(path) > BURN_MSGS_MESSAGE_LEN - 160)
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{ret = 0; goto ex;}
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BURN_ALLOC_MEM(msg, char, BURN_MSGS_MESSAGE_LEN);
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if(stat(path, &stbuf) == -1)
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return 0;
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{ret = 0; goto ex;}
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path_rdev = stbuf.st_rdev;
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sg_select_device_family();
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if (linux_sg_device_family[0] == 0)
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return 1;
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{ret = 1; goto ex;}
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if(host_no < 0 || id_no < 0 || channel_no < 0 || lun_no < 0)
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return(2);
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{ret = 2; goto ex;}
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if(*sibling_count > 0)
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sg_release_siblings(sibling_fds, sibling_fnames,
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sibling_count);
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@ -724,10 +744,14 @@ static int sg_open_scsi_siblings(char *path, int driveno,
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last_rdev= stbuf.st_rdev;
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}
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}
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return 1;
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ret = 1;
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ex:;
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BURN_FREE_MEM(msg);
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return ret;
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failed:;
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sg_release_siblings(sibling_fds, sibling_fnames, sibling_count);
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return 0;
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ret = 0;
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goto ex;
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}
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@ -782,15 +806,20 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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{
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int fd, sid_ret = 0, ret;
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struct sg_scsi_id sid;
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int sibling_fds[BURN_OS_SG_MAX_SIBLINGS], sibling_count= 0;
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char sibling_fnames[BURN_OS_SG_MAX_SIBLINGS][BURN_OS_SG_MAX_NAMELEN];
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int *sibling_fds = NULL, sibling_count= 0;
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typedef char burn_sg_sibling_fname[BURN_OS_SG_MAX_NAMELEN];
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burn_sg_sibling_fname *sibling_fnames = NULL;
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BURN_ALLOC_MEM(sibling_fds, int, BURN_OS_SG_MAX_SIBLINGS);
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BURN_ALLOC_MEM(sibling_fnames, burn_sg_sibling_fname,
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BURN_OS_SG_MAX_SIBLINGS);
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fd = sg_open_drive_fd(fname, 1);
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if (fd == -1) {
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if (linux_sg_enumerate_debug)
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fprintf(stderr, "open failed, errno=%d '%s'\n",
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errno, strerror(errno));
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return 0;
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{ret = 0; goto ex;}
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}
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sid_ret = ioctl(fd, SG_GET_SCSI_ID, &sid);
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@ -808,7 +837,7 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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errno, strerror(errno));
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sg_close_drive_fd(fname, -1, &fd, 0);
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return 0;
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{ret = 0; goto ex;}
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}
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#ifdef CDROM_DRIVE_STATUS
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@ -839,14 +868,14 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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fprintf(stderr,
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"cannot close properly, errno=%d '%s'\n",
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errno, strerror(errno));
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return 0;
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{ret = 0; goto ex;}
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}
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if ( (sid_ret == -1 || sid.scsi_type != TYPE_ROM)
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&& !linux_sg_accept_any_type) {
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if (linux_sg_enumerate_debug)
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fprintf(stderr, "sid.scsi_type = %d (!= TYPE_ROM)\n",
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sid.scsi_type);
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return 0;
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{ret = 0; goto ex;}
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}
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if (sid_ret == -1 || sid.scsi_id < 0) {
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@ -862,7 +891,7 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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if (linux_sg_enumerate_debug)
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fprintf(stderr,
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"sg_obtain_scsi_adr() failed\n");
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return 0;
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{ret = 0; goto ex;}
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}
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}
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@ -877,7 +906,7 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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if (linux_sg_enumerate_debug)
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fprintf(stderr, "cannot lock siblings\n");
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sg_handle_busy_device(fname, 0);
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return 0;
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{ret = 0; goto ex;}
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}
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/* the final occupation will be done in sg_grab() */
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sg_release_siblings(sibling_fds, sibling_fnames,
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@ -893,7 +922,11 @@ static int is_scsi_drive(char *fname, int *bus_no, int *host_no,
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*channel_no= sid.channel;
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*target_no= sid.scsi_id;
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*lun_no= sid.lun;
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return 1;
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ret = 1;
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ex:;
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BURN_FREE_MEM(sibling_fds);
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BURN_FREE_MEM(sibling_fnames);
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return ret;
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}
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@ -1025,33 +1058,35 @@ static int fname_drive_is_listed(char *fname, int flag)
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*/
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static int fname_enumerate(char *fname, int flag)
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{
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int is_ata= 0, is_scsi= 0;
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int is_ata= 0, is_scsi= 0, ret;
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int bus_no= -1, host_no= -1, channel_no= -1, target_no= -1, lun_no= -1;
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char msg[BURN_DRIVE_ADR_LEN + 80];
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char *msg = NULL;
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struct stat stbuf;
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BURN_ALLOC_MEM(msg, char, BURN_DRIVE_ADR_LEN + 80);
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if (!(flag & 2))
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if (fname_drive_is_listed(fname, 0))
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return 2;
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{ret = 2; goto ex;}
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if (stat(fname, &stbuf) == -1) {
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sprintf(msg, "File object '%s' not found", fname);
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if (!(flag & 1))
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libdax_msgs_submit(libdax_messenger, -1, 0x0002000b,
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LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
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msg, 0, 0);
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return -1;
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{ret = -1; goto ex;}
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}
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is_ata = is_ata_drive(fname);
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if (is_ata < 0)
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return -1;
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{ret = -1; goto ex;}
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if (!is_ata)
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is_scsi = is_scsi_drive(fname, &bus_no, &host_no, &channel_no,
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&target_no, &lun_no);
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if (is_scsi < 0)
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return -1;
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{ret = -1; goto ex;}
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if (is_ata == 0 && is_scsi == 0)
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return 0;
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{ret = 0; goto ex;}
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if (linux_sg_enumerate_debug)
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fprintf(stderr,
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@ -1059,7 +1094,10 @@ static int fname_enumerate(char *fname, int flag)
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host_no, channel_no, target_no, lun_no, bus_no);
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enumerate_common(fname, bus_no, host_no, channel_no,
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target_no, lun_no);
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return 1;
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ret = 1;
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ex:;
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BURN_FREE_MEM(msg);
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return ret;
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}
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@ -1067,22 +1105,25 @@ static int fname_enumerate(char *fname, int flag)
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static int single_enumerate(int flag)
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{
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int ret, wl_count;
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char *fname, msg[BURN_DRIVE_ADR_LEN + 80];
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char *fname, *msg = NULL;
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wl_count= burn_drive_whitelist_count();
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if (wl_count != 1)
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return 0;
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{ret = 0; goto ex;}
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fname= burn_drive_whitelist_item(0, 0);
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if (fname == NULL)
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return 0;
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{ret = 0; goto ex;}
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ret = fname_enumerate(fname, 2);
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if (ret <= 0) {
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BURN_ALLOC_MEM(msg, char, BURN_DRIVE_ADR_LEN + 80);
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sprintf(msg, "Cannot access '%s' as SG_IO CDROM drive", fname);
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libdax_msgs_submit(libdax_messenger, -1, 0x0002000a,
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LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
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msg, 0, 0);
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ret = -1;
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}
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ex:;
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BURN_FREE_MEM(msg);
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return ret;
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}
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@ -1094,8 +1135,11 @@ static int single_enumerate(int flag)
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static int proc_sys_dev_cdrom_info(char ***list, int *count, int flag)
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{
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FILE *fp;
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char line[1024], fname[1024 + 5], *cpt, *retpt, *list_data;
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int maxl= 0, pass, i;
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char *line = NULL, *fname = NULL, *cpt, *retpt, *list_data;
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int maxl= 0, pass, i, line_size = 1024, ret;
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BURN_ALLOC_MEM(line, char, line_size);
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BURN_ALLOC_MEM(fname, char, line_size + 5);
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if (*list != NULL) {
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if ((*list)[0] != NULL)
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@ -1105,17 +1149,17 @@ static int proc_sys_dev_cdrom_info(char ***list, int *count, int flag)
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*count = 0;
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}
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if (flag & 1)
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return 1;
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{ret = 1; goto ex;}
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*count = 0;
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sg_evaluate_kernel();
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if (sg_kernel_age < 2) /* addresses are not suitable for kernel 2.4 */
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return 1;
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{ret = 1; goto ex;}
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fp = fopen("/proc/sys/dev/cdrom/info", "r");
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if (fp == NULL)
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return 0;
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{ret = 0; goto ex;}
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while (1) {
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retpt = fgets(line, sizeof(line), fp);
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retpt = fgets(line, line_size, fp);
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if (retpt == NULL)
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break;
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if(strncmp(line, "drive name:", 11) == 0)
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@ -1123,7 +1167,7 @@ static int proc_sys_dev_cdrom_info(char ***list, int *count, int flag)
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}
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fclose(fp);
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if (retpt == NULL)
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return 0;
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{ret = 0; goto ex;}
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strcpy(fname, "/dev/");
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for(pass = 0; pass < 2; pass++) {
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*count = 0;
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@ -1153,13 +1197,17 @@ static int proc_sys_dev_cdrom_info(char ***list, int *count, int flag)
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free(list_data);
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if (*list != NULL)
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free((char *) *list);
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return -1;
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{ret = -1; goto ex;}
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}
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for (i = 0; i <= *count; i++)
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(*list)[i] = list_data + i * (maxl + 1);
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}
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}
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return 1;
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ret = 1;
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ex:;
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BURN_FREE_MEM(line);
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BURN_FREE_MEM(fname);
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return ret;
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}
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@ -1576,20 +1624,21 @@ int sg_release(struct burn_drive *d)
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*/
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int sg_issue_command(struct burn_drive *d, struct command *c)
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{
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int done = 0, no_c_page = 0, i;
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int done = 0, no_c_page = 0, i, ret;
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int err;
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time_t start_time;
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sg_io_hdr_t s;
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/* ts A61030 */
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static FILE *fp= NULL;
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char *msg = NULL;
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BURN_ALLOC_MEM(msg, char, 161);
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/* <<< ts A60821
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debug: for tracing calls which might use open drive fds */
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char buf[161];
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sprintf(buf,"sg_issue_command d->fd= %d d->released= %d\n",
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d->fd,d->released);
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mmc_function_spy(NULL, buf);
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sprintf(msg, "sg_issue_command d->fd= %d d->released= %d\n",
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d->fd, d->released);
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mmc_function_spy(NULL, msg);
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/* ts A61030 */
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if (burn_sg_log_scsi & 1) {
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@ -1605,7 +1654,7 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
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/* ts A61010 : with no fd there is no chance to send an ioctl */
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if (d->fd < 0) {
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c->error = 1;
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return 0;
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{ret = 0; goto ex;}
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}
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c->error = 0;
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@ -1657,7 +1706,7 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
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/* a ssert(c->page->bytes > 0); */
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if (c->page->bytes <= 0) {
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c->error = 1;
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return 0;
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{ret = 0; goto ex;}
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}
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s.dxfer_len = c->page->bytes;
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@ -1684,7 +1733,7 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
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d->released = 1;
|
||||
d->busy = BURN_DRIVE_IDLE;
|
||||
c->error = 1;
|
||||
return -1;
|
||||
{ret = -1; goto ex;}
|
||||
}
|
||||
done = scsi_eval_cmd_outcome(d, c, fp, s.sbp, s.sb_len_wr,
|
||||
s.duration, start_time, s.timeout, i, 0);
|
||||
@ -1692,8 +1741,6 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
|
||||
|
||||
if (s.host_status != Libburn_sg_host_oK ||
|
||||
(s.driver_status != Libburn_sg_driver_oK && !c->error)) {
|
||||
char msg[161];
|
||||
|
||||
sprintf(msg,
|
||||
"SCSI command %2.2Xh indicates host or driver error:",
|
||||
(unsigned int) c->opcode[0]);
|
||||
@ -1706,7 +1753,10 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
|
||||
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
|
||||
msg, 0, 0);
|
||||
}
|
||||
return 1;
|
||||
ret = 1;
|
||||
ex:;
|
||||
BURN_FREE_MEM(msg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
@ -1781,23 +1831,27 @@ int sg_obtain_scsi_adr(char *path, int *bus_no, int *host_no, int *channel_no,
|
||||
*/
|
||||
int sg_is_enumerable_adr(char *adr)
|
||||
{
|
||||
char fname[4096];
|
||||
int ret = 0, first = 1;
|
||||
char *fname = NULL;
|
||||
int ret = 0, first = 1, fname_size = 4096;
|
||||
burn_drive_enumerator_t idx;
|
||||
|
||||
BURN_ALLOC_MEM(fname, char, fname_size);
|
||||
while (1) {
|
||||
ret= sg_give_next_adr(&idx, fname, sizeof(fname), first);
|
||||
ret= sg_give_next_adr(&idx, fname, fname_size, first);
|
||||
if(ret <= 0)
|
||||
break;
|
||||
first = 0;
|
||||
if (strcmp(adr, fname) == 0) {
|
||||
sg_give_next_adr(&idx, fname, sizeof(fname), -1);
|
||||
return 1;
|
||||
sg_give_next_adr(&idx, fname, fname_size, -1);
|
||||
{ret = 1; goto ex;}
|
||||
}
|
||||
}
|
||||
ret = 0;
|
||||
ex:;
|
||||
if (first == 0)
|
||||
sg_give_next_adr(&idx, fname, sizeof(fname), -1);
|
||||
return(0);
|
||||
sg_give_next_adr(&idx, fname, fname_size, -1);
|
||||
BURN_FREE_MEM(fname);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
@ -1834,11 +1888,12 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
|
||||
{
|
||||
struct stat stbuf;
|
||||
struct statvfs vfsbuf;
|
||||
char testpath[4096], *cpt;
|
||||
char *testpath = NULL, *cpt;
|
||||
long blocks;
|
||||
int open_mode = O_RDONLY, fd, ret;
|
||||
off_t add_size = 0;
|
||||
|
||||
BURN_ALLOC_MEM(testpath, char, 4096);
|
||||
testpath[0] = 0;
|
||||
blocks = *bytes / 512;
|
||||
if (stat(path, &stbuf) == -1) {
|
||||
@ -1851,29 +1906,32 @@ int burn_os_stdio_capacity(char *path, off_t *bytes)
|
||||
else
|
||||
*cpt = 0;
|
||||
if (stat(testpath, &stbuf) == -1)
|
||||
return -1;
|
||||
{ret = -1; goto ex;}
|
||||
} else if(S_ISBLK(stbuf.st_mode)) {
|
||||
fd = open(path, open_mode);
|
||||
if (fd == -1)
|
||||
return -2;
|
||||
{ret = -2; goto ex;}
|
||||
ret = ioctl(fd, BLKGETSIZE, &blocks);
|
||||
close(fd);
|
||||
if (ret == -1)
|
||||
return -2;
|
||||
{ret = -2; goto ex;}
|
||||
*bytes = ((off_t) blocks) * (off_t) 512;
|
||||
} else if(S_ISREG(stbuf.st_mode)) {
|
||||
add_size = stbuf.st_blocks * (off_t) 512;
|
||||
strcpy(testpath, path);
|
||||
} else
|
||||
return 0;
|
||||
{ret = 0; goto ex;}
|
||||
|
||||
if (testpath[0]) {
|
||||
if (statvfs(testpath, &vfsbuf) == -1)
|
||||
return -2;
|
||||
{ret = -2; goto ex;}
|
||||
*bytes = add_size + ((off_t) vfsbuf.f_frsize) *
|
||||
(off_t) vfsbuf.f_bavail;
|
||||
}
|
||||
return 1;
|
||||
ret = 1;
|
||||
ex:;
|
||||
BURN_FREE_MEM(testpath);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user