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https://github.com/vivier/EMILE.git
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107 lines
2.7 KiB
C
107 lines
2.7 KiB
C
static __attribute__((used)) char* rcsid = "$CVSHeader$";
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/*
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*
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* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
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*
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*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include "libemile.h"
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#include "emile.h"
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int emile_second_set_kernel_scsi(int fd, char *kernel_name)
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{
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int fd_kernel;
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int ret;
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emile_l2_header_t header;
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off_t container_offset;
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struct emile_container *container;
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int max_blocks;
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int i;
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unsigned long kernel_image_size;
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ret = read(fd, &header, sizeof(header));
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if (ret != sizeof(header))
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return EEMILE_CANNOT_READ_SECOND;
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if (!EMILE_COMPAT(EMILE_04_SIGNATURE, read_long(&header.signature)))
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return EEMILE_INVALID_SECOND;
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container_offset = read_long(&header.kernel_image_offset);
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if (container_offset == 0)
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return -1;
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ret = lseek(fd, container_offset, SEEK_SET);
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if (ret != container_offset)
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return EEMILE_CANNOT_READ_SECOND;
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container = (struct emile_container*)
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malloc(sizeof(struct emile_container));
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if (container == NULL)
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return EEMILE_MALLOC_ERROR;
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ret = read(fd, container, sizeof(struct emile_container));
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if (ret != sizeof(struct emile_container))
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return EEMILE_CANNOT_READ_SECOND;
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max_blocks = container->max_blocks;
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free(container);
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container = (struct emile_container*)
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malloc(sizeof(struct emile_container)
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+ max_blocks * sizeof(struct emile_block));
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if (container == NULL)
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return EEMILE_MALLOC_ERROR;
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container->max_blocks = max_blocks;
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fd_kernel = open(kernel_name, O_RDONLY);
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if (fd_kernel == -1)
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return EEMILE_CANNOT_READ_KERNEL;
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ret = emile_scsi_create_container(fd_kernel, container);
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if (ret != 0)
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return ret;
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close(fd_kernel);
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kernel_image_size = 0;
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for(i = 0; i < max_blocks; i++)
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{
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if (container->blocks[i].count == 0)
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break;
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printf("(%d, %d) ", container->blocks[i].offset,
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container->blocks[i].count);
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kernel_image_size += container->blocks[i].count;
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}
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putchar('\n');
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kernel_image_size *= container->block_size;
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printf("kernel image size: %ld\n", kernel_image_size);
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ret = lseek(fd, container_offset, SEEK_SET);
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if (ret != container_offset)
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return EEMILE_CANNOT_WRITE_SECOND;
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ret = write(fd, container, sizeof(struct emile_container)
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+ max_blocks * sizeof(struct emile_block));
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if (ret != sizeof(struct emile_container)
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+ max_blocks * sizeof(struct emile_block))
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return EEMILE_CANNOT_WRITE_SECOND;
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ret = lseek(fd, 0, SEEK_SET);
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if (ret != 0)
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return -1;
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header.kernel_image_size = kernel_image_size;
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ret = write(fd, &header, sizeof(header));
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if (ret != sizeof(header))
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return EEMILE_CANNOT_WRITE_SECOND;
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return 0;
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}
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