diff options
Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c')
| -rw-r--r-- | contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c deleted file mode 100644 index 763eff2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c +++ /dev/null @@ -1,161 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initramfs_file.c - * - * Utility functions to add arbitrary files including cpio header - */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <sys/stat.h> -#include <syslinux/linux.h> - -#define CPIO_MAGIC "070701" -struct cpio_header { - char c_magic[6]; /* 070701 */ - char c_ino[8]; /* Inode number */ - char c_mode[8]; /* File mode and permissions */ - char c_uid[8]; /* uid */ - char c_gid[8]; /* gid */ - char c_nlink[8]; /* Number of links */ - char c_mtime[8]; /* Modification time */ - char c_filesize[8]; /* Size of data field */ - char c_maj[8]; /* File device major number */ - char c_min[8]; /* File device minor number */ - char c_rmaj[8]; /* Device node reference major number */ - char c_rmin[8]; /* Device node reference minor number */ - char c_namesize[8]; /* Length of filename including final \0 */ - char c_chksum[8]; /* Checksum if c_magic ends in 2 */ -}; - -static uint32_t next_ino = 1; - -/* Create cpio headers for the directory entries leading up to a file. - Returns the number of bytes; doesn't touch the buffer if too small. */ -static size_t initramfs_mkdirs(const char *filename, void *buffer, - size_t buflen) -{ - const char *p = filename; - char *bp = buffer; - int len; - size_t bytes = 0; - int pad; - - while ((p = strchr(p, '/'))) { - if (p != filename && p[-1] != '/') { - len = p - filename; - bytes += ((sizeof(struct cpio_header) + len + 1) + 3) & ~3; - } - p++; - } - - if (buflen >= bytes) { - p = filename; - while ((p = strchr(p, '/'))) { - if (p != filename && p[-1] != '/') { - len = p - filename; - bp += sprintf(bp, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x" - "%08x%08x%08x%08x", next_ino++, S_IFDIR | 0755, - 0, 0, 1, 0, 0, 0, 1, 0, 1, len + 1, 0); - memcpy(bp, filename, len); - bp += len; - pad = (-(sizeof(struct cpio_header) + len) & 3) + 1; - memset(bp, 0, pad); - bp += pad; - } - } - } - - return bytes; -} - -/* - * Create a file header (with optional parent directory entries) - * and add it to an initramfs chain - */ -int initramfs_mknod(struct initramfs *ihead, const char *filename, - int do_mkdir, - uint16_t mode, size_t len, uint32_t major, uint32_t minor) -{ - size_t bytes; - int namelen = strlen(filename); - int pad; - char *buffer, *bp; - - if (do_mkdir) - bytes = initramfs_mkdirs(filename, NULL, 0); - else - bytes = 0; - - bytes += ((sizeof(struct cpio_header) + namelen + 1) + 3) & ~3; - - bp = buffer = malloc(bytes); - if (!buffer) - return -1; - - if (do_mkdir) - bp += initramfs_mkdirs(filename, bp, bytes); - - bp += sprintf(bp, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x" - "%08x%08x%08x%08x", next_ino++, mode, - 0, 0, 1, 0, len, 0, 1, major, minor, namelen + 1, 0); - memcpy(bp, filename, namelen); - bp += len; - pad = (-(sizeof(struct cpio_header) + namelen) & 3) + 1; - memset(bp, 0, pad); - - if (initramfs_add_data(ihead, buffer, bytes, bytes, 4)) { - free(buffer); - return -1; - } - - return 0; -} - -/* - * Add a file given data in memory to an initramfs chain. This - * can be used to create nonfiles like symlinks by specifying an - * appropriate mode. - */ -int initramfs_add_file(struct initramfs *ihead, const void *data, - size_t data_len, size_t len, - const char *filename, int do_mkdir, uint32_t mode) -{ - if (initramfs_mknod(ihead, filename, do_mkdir, - (mode & S_IFMT) ? mode : mode | S_IFREG, len, 0, 1)) - return -1; - - return initramfs_add_data(ihead, data, data_len, len, 4); -} - -int initramfs_add_trailer(struct initramfs *ihead) -{ - return initramfs_mknod(ihead, "TRAILER!!!", 0, 0, 0, 0, 0); -} |