65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
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#include "internal.h"
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#include <dirent.h>
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#include <string.h>
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#include <stdio.h>
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const char block_device_usage[] = "block_device mount-point";
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static dev_t *my_device;
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static char *my_device_name;
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int
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match_mount(const struct FileInfo * i) {
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if ( S_ISBLK(i->stat.st_mode)
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&& (i->stat.st_rdev == *my_device)) {
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my_device_name=strdup(i->source);
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return 1;
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} else
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return 0;
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}
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extern int
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block_device_main(struct FileInfo * i, int argc, char * * argv)
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{
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char *device_name = block_device(argv[1],i);
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if ( device_name == NULL )
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return -1;
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printf("%s\n", device_name);
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exit(0);
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}
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char * block_device(const char *name, struct FileInfo *i)
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{
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struct stat s;
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char *buf;
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int dinam=0;
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if ( stat(name, &s) ) return (char *) NULL;
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if (!i) {
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i=(struct FileInfo*)malloc(sizeof(struct FileInfo));
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dinam = 1;
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}
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memset((void *)i, 0, sizeof(struct FileInfo));
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my_device=(dev_t *)malloc(sizeof(dev_t));
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*my_device = s.st_dev;
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my_device_name = NULL;
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i->source = "/dev";
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i->stat = s;
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i->processDirectoriesAfterTheirContents=1;
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descend(i, match_mount);
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if (dinam) free(i);
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if ( my_device_name ) {
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buf = strdup(my_device_name);
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free(my_device);
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free(my_device_name);
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return buf;
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} else {
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fprintf( stderr
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,"Can't find special file for block device %d, %d.\n"
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,(int) *my_device >> 8 & 0xff
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,(int) *my_device & 0xff);
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free(my_device);
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return (char *) NULL;
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}
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}
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