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New option -device_links

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This commit is contained in:
Thomas Schmitt
2011-07-27 21:14:49 +00:00
parent 301ed657c6
commit 83d1a68a05
10 changed files with 241 additions and 92 deletions
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111
libisoburn/trunk/xorriso/drive_mgt.c
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@ -1119,9 +1119,92 @@ ex:;
}
/* @param link_adr must point to NULL or to allocated memory that may be freed
*/
int Xorriso_lookup_device_link(struct XorrisO *xorriso, char *dev_adr,
char **link_adr, int flag)
{
struct DirseQ *dirseq= NULL;
struct stat link_stbuf;
char *adr= NULL, *namept, *sys_adr= NULL;
int ret, name_rank, found_rank= 0x7fffffff;
static char ranks[][8] = {"cdrw", "dvdrw", "cdrom", "dvd", "cd", ""};
adr= calloc(SfileadrL + 5, 1);
sys_adr= calloc(BURN_DRIVE_ADR_LEN, 1);
if(adr == NULL || sys_adr == NULL) {
Xorriso_no_malloc_memory(xorriso, NULL, 0);
{ret= -1; goto ex;}
}
namept= adr + 5;
/* Search for candidates in /dev */
ret= Dirseq_new(&dirseq, "/dev", 1);
if(ret<0) {
sprintf(xorriso->info_text, "Cannot obtain disk directory iterator");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
{ret= -1; goto ex;}
}
strcpy(adr, "/dev/");
while(1) {
ret= Dirseq_next_adr(dirseq, namept, 0);
if(ret < 0)
goto ex;
if(ret == 0)
break;
if(lstat(adr, &link_stbuf) == -1)
{ret= 0; goto ex;}
if((link_stbuf.st_mode & S_IFMT) != S_IFLNK)
continue;
/* Determine rank and omit uninteresting ones */
for(name_rank= 0; ranks[name_rank][0]; name_rank++)
if(strncmp(namept, ranks[name_rank], strlen(ranks[name_rank])) == 0)
break;
if(ranks[name_rank][0] == 0 ||
name_rank >= found_rank) /* we look for lowest rank */
continue;
/* Does name point to the same device as dev_adr ? */
ret= burn_drive_convert_fs_adr(adr, sys_adr);
if(ret < 0)
goto ex;
if(ret == 0)
continue;
if(strcmp(dev_adr, sys_adr) == 0) {
if(*link_adr != NULL)
free(*link_adr);
*link_adr= strdup(adr);
if(*link_adr == NULL) {
Xorriso_no_malloc_memory(xorriso, NULL, 0);
{ret= -1; goto ex;}
}
found_rank= name_rank;
if(found_rank == 0)
break;
}
}
ret= 2;
if(found_rank < 0x7fffffff)
ret= 1;
ex:;
Xorriso_process_msg_queues(xorriso,0);
if(dirseq != NULL)
Dirseq_destroy(&dirseq, 0);
if(adr != NULL)
free(adr);
if(sys_adr != NULL)
free(sys_adr);
return(ret);
}
/* @param flag bit0= try to find 'meaningful' links for enumerated devices
*/
int Xorriso_show_devices(struct XorrisO *xorriso, int flag)
{
char *adr= NULL;
char *adr= NULL, *link_adr= NULL, *adrpt;
int i, j, max_dev_len= 1, pad, ret;
struct burn_drive_info *drive_list= NULL;
unsigned int drive_count;
@ -1158,8 +1241,16 @@ int Xorriso_show_devices(struct XorrisO *xorriso, int flag)
if(burn_drive_get_adr(&(drive_list[i]), adr)<=0)
strcpy(adr, "-get_adr_failed-");
Xorriso_process_msg_queues(xorriso,0);
if((int) strlen(adr) > max_dev_len)
max_dev_len= strlen(adr);
adrpt= adr;
if(flag & 1) {
ret= Xorriso_lookup_device_link(xorriso, adr, &link_adr, 0);
if(ret < 0)
goto ex;
if(ret == 1)
adrpt= link_adr;
}
if((int) strlen(adrpt) > max_dev_len)
max_dev_len= strlen(adrpt);
}
for(i= 0; i < (int) drive_count && !(xorriso->request_to_abort); i++) {
if(burn_drive_get_adr(&(drive_list[i]), adr)<=0)
@ -1176,8 +1267,16 @@ int Xorriso_show_devices(struct XorrisO *xorriso, int flag)
if(stbuf.st_mode&S_IROTH) perms[4]= 'r';
if(stbuf.st_mode&S_IWOTH) perms[5]= 'w';
}
sprintf(respt, "%d -dev '%s' ", i, adr);
pad= max_dev_len-strlen(adr);
adrpt= adr;
if(flag & 1) {
ret= Xorriso_lookup_device_link(xorriso, adr, &link_adr, 0);
if(ret < 0)
goto ex;
if(ret == 1)
adrpt= link_adr;
}
sprintf(respt, "%d -dev '%s' ", i, adrpt);
pad= max_dev_len-strlen(adrpt);
if(pad>0)
for(j= 0; j<pad; j++)
strcat(respt, " ");
@ -1189,9 +1288,9 @@ int Xorriso_show_devices(struct XorrisO *xorriso, int flag)
Xorriso_info(xorriso,0);
burn_drive_info_free(drive_list);
Xorriso_process_msg_queues(xorriso,0);
ret= 1;
ex:;
Xorriso_process_msg_queues(xorriso,0);
Xorriso_free_meM(adr);
return(ret);
}