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authorSimon Glass <sjg@chromium.org>2015-06-23 15:39:12 -0600
committerSimon Glass <sjg@chromium.org>2015-07-21 17:39:29 -0600
commit92a655c326b22de58dcd5371ca1a62fdc57f8e04 (patch)
treec4be6e5c792223d25a44f667a47e533a91bbfddc
parentaea3d40d05f0eb8627ac0999315cad5c4b3676f5 (diff)
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mkimage: Set up a file size parameter and keep it updated
Some functions called by mkimage would like to know the output file size. Initially this is the same as the input file size, but it may be affected by adding headers, etc. Add this information to the image parameters. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
-rw-r--r--tools/imagetool.h1
-rw-r--r--tools/mkimage.c18
2 files changed, 19 insertions, 0 deletions
diff --git a/tools/imagetool.h b/tools/imagetool.h
index b7874f4..99bbf2f 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -59,6 +59,7 @@ struct image_tool_params {
const char *keydest; /* Destination .dtb for public key */
const char *comment; /* Comment to add to signature node */
int require_keys; /* 1 to mark signing keys as 'required' */
+ int file_size; /* Total size of output file */
};
/*
diff --git a/tools/mkimage.c b/tools/mkimage.c
index 8808d70..e81d455 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -75,6 +75,7 @@ int main(int argc, char **argv)
int retval = 0;
struct image_type_params *tparams = NULL;
int pad_len = 0;
+ int dfd;
params.cmdname = *argv;
params.addr = params.ep = 0;
@@ -310,6 +311,22 @@ NXTARG: ;
exit (retval);
}
+ dfd = open(params.datafile, O_RDONLY | O_BINARY);
+ if (dfd < 0) {
+ fprintf(stderr, "%s: Can't open %s: %s\n",
+ params.cmdname, params.datafile, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ if (fstat(dfd, &sbuf) < 0) {
+ fprintf(stderr, "%s: Can't stat %s: %s\n",
+ params.cmdname, params.datafile, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ params.file_size = sbuf.st_size + tparams->header_size;
+ close(dfd);
+
/*
* In case there an header with a variable
* length will be added, the corresponding
@@ -409,6 +426,7 @@ NXTARG: ;
params.cmdname, params.imagefile, strerror(errno));
exit (EXIT_FAILURE);
}
+ params.file_size = sbuf.st_size;
ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
if (ptr == MAP_FAILED) {