From cc8ed39b240180b58810784f844e253263594ac3 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Tue, 5 Oct 1999 16:24:54 +0000 Subject: Initial revision --- block_device.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 block_device.c (limited to 'block_device.c') diff --git a/block_device.c b/block_device.c new file mode 100644 index 000000000..87e7209c0 --- /dev/null +++ b/block_device.c @@ -0,0 +1,64 @@ +#include "internal.h" +#include +#include +#include + +const char block_device_usage[] = "block_device mount-point"; + +static dev_t *my_device; +static char *my_device_name; + +int +match_mount(const struct FileInfo * i) { + if ( S_ISBLK(i->stat.st_mode) + && (i->stat.st_rdev == *my_device)) { + my_device_name=strdup(i->source); + return 1; + } else + return 0; +} + +extern int +block_device_main(struct FileInfo * i, int argc, char * * argv) +{ + char *device_name = block_device(argv[1],i); + if ( device_name == NULL ) + return -1; + printf("%s\n", device_name); + exit(0); +} + +char * block_device(const char *name, struct FileInfo *i) +{ + struct stat s; + char *buf; + int dinam=0; + + if ( stat(name, &s) ) return (char *) NULL; + if (!i) { + i=(struct FileInfo*)malloc(sizeof(struct FileInfo)); + dinam = 1; + } + memset((void *)i, 0, sizeof(struct FileInfo)); + my_device=(dev_t *)malloc(sizeof(dev_t)); + *my_device = s.st_dev; + my_device_name = NULL; + i->source = "/dev"; + i->stat = s; + i->processDirectoriesAfterTheirContents=1; + descend(i, match_mount); + if (dinam) free(i); + if ( my_device_name ) { + buf = strdup(my_device_name); + free(my_device); + free(my_device_name); + return buf; + } else { + fprintf( stderr + ,"Can't find special file for block device %d, %d.\n" + ,(int) *my_device >> 8 & 0xff + ,(int) *my_device & 0xff); + free(my_device); + return (char *) NULL; + } +} -- cgit v1.2.3