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https://github.com/vivier/EMILE.git
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use getopt() and emile_get_uncompressed_size()
This commit is contained in:
Laurent Vivier
parent
964f5809ac
commit
24baafee89
@ -11,129 +11,170 @@
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include "libemile.h"
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enum {
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ARG_NONE = 0,
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ARG_HELP ='h',
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ARG_VERBOSE = 'v',
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ARG_FIRST = 'f',
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ARG_SECOND = 's',
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ARG_KERNEL = 'k',
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ARG_RAMDISK = 'r',
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ARG_BUFFER ='b',
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};
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static struct option long_options[] =
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{
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{"help", 0, NULL, ARG_HELP },
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{"verbose", 0, NULL, ARG_VERBOSE },
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{"first", 1, NULL, ARG_FIRST },
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{"second", 1, NULL, ARG_SECOND },
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{"kernel", 1, NULL, ARG_KERNEL },
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{"ramdisk", 1, NULL, ARG_RAMDISK },
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{"buffer", 1, NULL, ARG_BUFFER },
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{NULL, 0, NULL, 0 },
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};
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static void usage(int argc, char** argv)
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{
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fprintf(stderr, "Usage: %s -f <first level> -s <second level> -i <kernel image> -r <ramdisk> -b <buffer size> <image>\n", argv[0]);
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fprintf(stderr, "Usage: %s [OPTION] <image>\n", argv[0]);
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fprintf(stderr, "Create an EMILE bootable floppy disk\n");
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fprintf(stderr, "EMILE allows you to boot linux from a floppy disk\n");
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fprintf(stderr, " -h, --help display this text\n");
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fprintf(stderr, " -v, --verbose verbose mode\n");
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fprintf(stderr, " -f, --first first level to copy to floppy\n");
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fprintf(stderr, " -s, --second second level to copy to floppy\n");
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fprintf(stderr, " -k, --kernel kernel to copy to floppy\n");
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fprintf(stderr, " -r, --ramdisk ramdisk to copy to floppy\n");
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fprintf(stderr, " -b, --buffer buffer size to decompress kernel\n");
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fprintf(stderr, "\nbuild: \n%s\n", SIGNATURE);
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}
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int main(int argc, char** argv)
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{
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int verbose = 0;
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int option_index = 0;
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char* first_level = NULL;
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char* second_level = NULL;
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char* kernel_image = NULL;
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char* ramdisk = NULL;
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unsigned long buffer_size = 0;
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char* image = NULL;
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int i;
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int c;
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int ret;
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if ((argc != 12) && (argc != 10) && (argc != 8) )
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while(1)
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{
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c = getopt_long(argc, argv, "hvf:s:k:r:b:", long_options,
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&option_index);
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if (c == -1)
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break;
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switch(c)
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{
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case ARG_HELP:
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usage(argc, argv);
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return 0;
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case ARG_VERBOSE:
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verbose = 1;
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break;
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case ARG_FIRST:
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first_level = optarg;
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break;
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case ARG_SECOND:
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second_level = optarg;
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break;
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case ARG_KERNEL:
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kernel_image = optarg;
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break;
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case ARG_RAMDISK:
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ramdisk = optarg;
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break;
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case ARG_BUFFER:
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buffer_size = atol(optarg);
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break;
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}
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}
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if (optind < argc)
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image = argv[optind];
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if (image == NULL)
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{
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fprintf(stderr,
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"ERROR: you must provide an image file or a block device.\n");
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usage(argc, argv);
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return 1;
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}
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for (i = 1; i < argc; i++)
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if (first_level == NULL)
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first_level = PREFIX "/lib/emile/first_floppy";
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if (second_level == NULL)
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second_level = PREFIX "/lib/emile/second_floppy";
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if (kernel_image == NULL)
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kernel_image = PREFIX "/boot/vmlinuz";
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if (buffer_size == 0)
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{
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if (strcmp("-f", argv[i]) == 0)
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buffer_size = emile_get_uncompressed_size(kernel_image);
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if (buffer_size == -1)
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{
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if (first_level != NULL)
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{
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fprintf(stderr, "Duplicate definition of -f\n");
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return 1;
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}
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i++;
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if (i < argc)
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first_level = argv[i];
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else
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{
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fprintf(stderr, "Missing argument for -f\n");
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return 1;
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}
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}
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else if (strcmp("-s", argv[i]) == 0)
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{
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if (second_level != NULL)
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{
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fprintf(stderr, "Duplicate definition of -s\n");
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return 1;
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}
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i++;
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if (i < argc)
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second_level = argv[i];
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else
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{
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fprintf(stderr, "Missing argument for -s\n");
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return 1;
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}
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}
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else if (strcmp("-i", argv[i]) == 0)
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{
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if (kernel_image != NULL)
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{
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fprintf(stderr, "Duplicate definition of -i\n");
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return 1;
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}
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i++;
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if (i < argc)
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kernel_image = argv[i];
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else
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{
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fprintf(stderr, "Missing argument for -i\n");
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return 1;
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}
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}
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else if (strcmp("-b", argv[i]) == 0)
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{
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if (buffer_size != 0)
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{
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fprintf(stderr, "Duplicate definition of -b\n");
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return 1;
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}
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i++;
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if (i < argc)
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buffer_size = atol(argv[i]);
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else
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{
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fprintf(stderr, "Missing argument for -b\n");
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return 1;
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}
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}
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else if (strcmp("-r", argv[i]) == 0)
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{
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if (ramdisk != 0)
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{
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fprintf(stderr, "Duplicate definition of -r\n");
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return 1;
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}
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i++;
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if (i < argc)
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ramdisk = argv[i];
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else
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{
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fprintf(stderr, "Missing argument for -r\n");
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return 1;
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}
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}
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else
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{
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if (image != NULL)
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{
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fprintf(stderr, "Unknown parameter %s\n",
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argv[i]);
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usage(argc, argv);
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return 1;
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}
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image = argv[i];
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fprintf(stderr,
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"ERROR: cannot compute size of uncompressed kernel\n");
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fprintf(stderr,
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" use \"--buffer <size>\" to set it or set path of gzip in PATH\n");
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fprintf(stderr,
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" or check \"%s\" can be read\n", kernel_image);
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return 2;
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}
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}
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if (verbose)
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{
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printf("first: %s\n", first_level);
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printf("second: %s\n", second_level);
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printf("kernel: %s\n", kernel_image);
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printf("buffer: %ld\n", buffer_size);
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printf("ramdisk: %s\n", ramdisk);
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printf("image: %s\n", image);
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}
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ret = emile_floppy_create_image(first_level, second_level,
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kernel_image, ramdisk, buffer_size,
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image);
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switch(ret)
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{
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case 0:
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break;
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case EEMILE_CANNOT_WRITE_FIRST:
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fprintf(stderr, "ERROR: cannot write first\n");
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break;
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case EEMILE_CANNOT_WRITE_SECOND:
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fprintf(stderr, "ERROR: cannot write second\n");
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break;
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case EEMILE_CANNOT_WRITE_KERNEL:
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fprintf(stderr, "ERROR: cannot write kernel\n");
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break;
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case EEMILE_CANNOT_WRITE_RAMDISK:
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fprintf(stderr, "ERROR: cannot write ramdisk\n");
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break;
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case EEMILE_CANNOT_WRITE_PAD:
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fprintf(stderr, "ERROR: cannot write padding\n");
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break;
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case EEMILE_CANNOT_CREATE_IMAGE:
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fprintf(stderr, "ERROR: cannot create image\n");
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break;
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case EEMILE_CANNOT_OPEN_FILE:
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fprintf(stderr, "ERROR: cannot open one of provided files\n");
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break;
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default:
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fprintf(stderr, "ERROR: unknown error :-P\n");
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break;
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}
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return ret;
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}
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