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mapfile size is the size of the filesystem blocksize
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bdb97aca27
commit
07d6ceb8ba
@ -6,40 +6,51 @@
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <linux/fs.h>
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#include "libemile.h"
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#include "libemile.h"
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#define MAPFILE_SIZE 4096
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struct emile_container *emile_second_create_mapfile(short *unit_id, char *mapfile, char* kernel)
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struct emile_container *emile_second_create_mapfile(short *unit_id, char *mapfile, char* kernel)
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{
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{
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struct emile_container *container;
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struct emile_container *container;
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int fd;
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int fd;
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int ret;
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int ret;
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short unit_id_map;
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short unit_id_map;
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int block_size;
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container = (struct emile_container *)malloc(MAPFILE_SIZE);
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if (container == NULL)
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{
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fprintf(stderr, "ERROR: cannot allocate memory for container\n");
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return NULL;
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}
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/* create container of the kernel */
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/* create container of the kernel */
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fd = open(kernel, O_RDONLY);
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fd = open(kernel, O_RDONLY);
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if (fd == -1)
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if (fd == -1)
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{
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{
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free(container);
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fprintf(stderr, "ERROR: cannot open kernel\n");
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fprintf(stderr, "ERROR: cannot open kernel\n");
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return NULL;
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return NULL;
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}
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}
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/* get filesystem block size */
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ret = ioctl(fd, FIGETBSZ, &block_size);
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if (ret != 0) {
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close(fd);
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perror("ioctl(FIGETBSZ)");
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return NULL;
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}
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container = (struct emile_container *)malloc(block_size);
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if (container == NULL)
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{
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fprintf(stderr, "ERROR: cannot allocate memory for container\n");
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close(fd);
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return NULL;
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}
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ret = emile_scsi_create_container(fd, &unit_id_map, container,
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ret = emile_scsi_create_container(fd, &unit_id_map, container,
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(MAPFILE_SIZE - sizeof(struct emile_container)) / sizeof(struct emile_block));
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(block_size - sizeof(struct emile_container)) / sizeof(struct emile_block));
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close(fd);
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close(fd);
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if (ret != 0)
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if (ret != 0)
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@ -59,11 +70,11 @@ struct emile_container *emile_second_create_mapfile(short *unit_id, char *mapfil
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return NULL;
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return NULL;
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}
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}
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ret = write(fd, container, MAPFILE_SIZE);
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ret = write(fd, container, block_size);
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close(fd);
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close(fd);
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if (ret != MAPFILE_SIZE)
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if (ret != block_size)
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{
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{
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fprintf(stderr, "ERROR: cannot write map file (%s)\n", mapfile);
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fprintf(stderr, "ERROR: cannot write map file (%s)\n", mapfile);
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free(container);
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free(container);
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@ -81,7 +92,7 @@ struct emile_container *emile_second_create_mapfile(short *unit_id, char *mapfil
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}
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}
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ret = emile_scsi_create_container(fd, unit_id, container,
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ret = emile_scsi_create_container(fd, unit_id, container,
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(MAPFILE_SIZE - sizeof(struct emile_container)) / sizeof(struct emile_block));
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(block_size - sizeof(struct emile_container)) / sizeof(struct emile_block));
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close(fd);
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close(fd);
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if (ret != 0)
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if (ret != 0)
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@ -98,7 +109,7 @@ struct emile_container *emile_second_create_mapfile(short *unit_id, char *mapfil
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return NULL;
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return NULL;
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}
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}
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if (container->size != MAPFILE_SIZE)
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if (container->size != block_size)
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{
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{
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fprintf(stderr, "ERROR: map file size is bad (%d)\n", container->size);
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fprintf(stderr, "ERROR: map file size is bad (%d)\n", container->size);
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free(container);
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free(container);
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