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| author | Vishnu Swaroop Duddu <duddu.swaroop@intel.com> | 2016-05-12 20:07:29 +0530 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2016-06-21 21:58:07 +0200 |
| commit | ee613097bee89eec370c2118614ac39f65ea1f21 (patch) | |
| tree | bc3315a7a66f93cad8f2c985e70442b7c32f6b18 /tools/patch-image/src/patch-cmdline.c | |
| parent | 63cb2fb88d3c4f919a00743b1fdbed1cf977d935 (diff) | |
| download | master-31e0f0ae-ee613097bee89eec370c2118614ac39f65ea1f21.tar.gz master-31e0f0ae-ee613097bee89eec370c2118614ac39f65ea1f21.tar.bz2 master-31e0f0ae-ee613097bee89eec370c2118614ac39f65ea1f21.zip | |
tools: patch-image: Added optional size option
Added optional command line option for patch-image tool
Default 16KB size is still maintained as this is an optional argument.
if one wants to specify or increase size they can provide this option.
sample usage: patch-dtb <file> <dtb> [dtb max size]
Signed-off-by: Vishnu Swaroop Duddu <duddu.swaroop@intel.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'tools/patch-image/src/patch-cmdline.c')
| -rw-r--r-- | tools/patch-image/src/patch-cmdline.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/tools/patch-image/src/patch-cmdline.c b/tools/patch-image/src/patch-cmdline.c index d3a5b119e4..8d1fce9172 100644 --- a/tools/patch-image/src/patch-cmdline.c +++ b/tools/patch-image/src/patch-cmdline.c @@ -35,10 +35,16 @@ int main(int argc, char **argv) { int fd, found = 0, len, ret = -1; char *ptr, *p; + unsigned int search_space; - if (argc != 3) { - fprintf(stderr, "Usage: %s <file> <cmdline>\n", argv[0]); + if (argc <= 2 || argc > 4) { + fprintf(stderr, "Usage: %s <file> <cmdline> [size]\n", argv[0]); goto err1; + } else if (argc == 3) { + fprintf(stdout, "search space used is default of 16KB\n"); + search_space = SEARCH_SPACE; + } else { + search_space = atoi(argv[3]); } len = strlen(argv[2]); if (len + 9 > CMDLINE_MAX) { @@ -47,12 +53,12 @@ int main(int argc, char **argv) } if (((fd = open(argv[1], O_RDWR)) < 0) || - (ptr = (char *) mmap(0, SEARCH_SPACE + CMDLINE_MAX, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) { + (ptr = (char *) mmap(0, search_space + CMDLINE_MAX, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) { fprintf(stderr, "Could not open kernel image"); goto err2; } - for (p = ptr; p < (ptr + SEARCH_SPACE); p += 4) { + for (p = ptr; p < (ptr + search_space); p += 4) { if (memcmp(p, "CMDLINE:", 8) == 0) { found = 1; p += 8; |