It is no longer used for upgrading Signed-off-by: Felix Fietkau <nbd@nbd.name>master
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ad76fdfc8a
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50a3bce3eb
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define Build/Compile |
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$(call Build/Compile/Default)
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$(TARGET_CC) -o $(PKG_BUILD_DIR)/patch-cmdline $(PLATFORM_DIR)/src/patch-cmdline.c
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endef |
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define Package/base-files/install-target |
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mkdir -p $(1)/sbin
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$(CP) $(PKG_BUILD_DIR)/patch-cmdline $(1)/sbin
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endef |
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@ -1,79 +0,0 @@ |
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/*
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* patch-cmdline.c - patch the kernel command line on rb532 |
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* |
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* Copyright (C) 2006 Felix Fietkau <nbd@nbd.name> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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* |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stddef.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <sys/mman.h> |
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#include <sys/stat.h> |
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#include <string.h> |
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#define SEARCH_SPACE (16 * 1024) |
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#define CMDLINE_MAX 512 |
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int main(int argc, char **argv) |
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{ |
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int fd, found = 0, len, ret = -1; |
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char *ptr, *p; |
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if (argc != 3) { |
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fprintf(stderr, "Usage: %s <file> <cmdline>\n", argv[0]); |
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goto err1; |
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} |
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len = strlen(argv[2]); |
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if (len + 9 > CMDLINE_MAX) { |
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fprintf(stderr, "Command line string too long\n"); |
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goto err1; |
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} |
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if (((fd = open(argv[1], O_RDWR)) < 0) || |
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(ptr = (char *) mmap(0, SEARCH_SPACE + CMDLINE_MAX, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) { |
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fprintf(stderr, "Could not open kernel image"); |
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goto err2; |
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} |
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for (p = ptr; p < (ptr + SEARCH_SPACE); p += 4) { |
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if (memcmp(p, "CMDLINE:", 8) == 0) { |
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found = 1; |
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p += 8; |
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break; |
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} |
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} |
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if (!found) { |
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fprintf(stderr, "Command line marker not found!\n"); |
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goto err3; |
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} |
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memset(p, 0, CMDLINE_MAX - 8); |
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strcpy(p, argv[2]); |
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msync(p, CMDLINE_MAX, MS_SYNC|MS_INVALIDATE); |
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ret = 0; |
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err3: |
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munmap((void *) ptr, len); |
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err2: |
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if (fd > 0) |
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close(fd); |
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err1: |
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return ret; |
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} |
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