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    Subject[PATCH] gen_init_cpio fixes for 2.5.64

    ChangeSet 1.1124, 2003/03/07 16:39:06-08:00, greg@kroah.com

    gen_init_cpio: Add the ability to add files to the cpio image.


    usr/gen_init_cpio.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 90 insertions(+)


    diff -Nru a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
    --- a/usr/gen_init_cpio.c Fri Mar 7 16:48:24 2003
    +++ b/usr/gen_init_cpio.c Fri Mar 7 16:48:24 2003
    @@ -5,10 +5,28 @@
    #include <string.h>
    #include <unistd.h>
    #include <time.h>
    +#include <fcntl.h>

    static unsigned int offset;
    static unsigned int ino = 721;

    +static void push_string(const char *name)
    +{
    + unsigned int name_len = strlen(name) + 1;
    +
    + fputs(name, stdout);
    + putchar(0);
    + offset += name_len;
    +}
    +
    +static void push_pad (void)
    +{
    + while (offset & 3) {
    + putchar(0);
    + offset++;
    + }
    +}
    +
    static void push_rest(const char *name)
    {
    unsigned int name_len = strlen(name) + 1;
    @@ -118,6 +136,78 @@
    0); /* chksum */
    push_hdr(s);
    push_rest(name);
    +}
    +
    +/* Not marked static to keep the compiler quiet, as no one uses this yet... */
    +void cpio_mkfile(const char *filename, const char *location,
    + unsigned int mode, uid_t uid, gid_t gid)
    +{
    + char s[256];
    + char *filebuf;
    + struct stat buf;
    + int file;
    + int retval;
    + int i;
    +
    + mode |= S_IFREG;
    +
    + retval = stat (filename, &buf);
    + if (retval) {
    + fprintf (stderr, "Filename %s could not be located\n", filename);
    + goto error;
    + }
    +
    + file = open (filename, O_RDONLY);
    + if (file < 0) {
    + fprintf (stderr, "Filename %s could not be opened for reading\n", filename);
    + goto error;
    + }
    +
    + filebuf = malloc(buf.st_size);
    + if (!filebuf) {
    + fprintf (stderr, "out of memory\n");
    + goto error_close;
    + }
    +
    + retval = read (file, filebuf, buf.st_size);
    + if (retval < 0) {
    + fprintf (stderr, "Can not read %s file\n", filename);
    + goto error_free;
    + }
    +
    + sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
    + "%08X%08X%08X%08X%08X%08X%08X",
    + "070701", /* magic */
    + ino++, /* ino */
    + mode, /* mode */
    + (long) uid, /* uid */
    + (long) gid, /* gid */
    + 1, /* nlink */
    + (long) buf.st_mtime, /* mtime */
    + (int) buf.st_size, /* filesize */
    + 3, /* major */
    + 1, /* minor */
    + 0, /* rmajor */
    + 0, /* rminor */
    + strlen(location) + 1, /* namesize */
    + 0); /* chksum */
    + push_hdr(s);
    + push_string(location);
    + push_pad();
    +
    + for (i = 0; i < buf.st_size; ++i)
    + fputc(filebuf[i], stdout);
    + close(file);
    + free(filebuf);
    + push_pad();
    + return;
    +
    +error_free:
    + free(filebuf);
    +error_close:
    + close(file);
    +error:
    + exit(-1);
    }

    int main (int argc, char *argv[])
    -
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