diff options
Diffstat (limited to 'tools/mkenvimage.c')
| -rw-r--r-- | tools/mkenvimage.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/tools/mkenvimage.c b/tools/mkenvimage.c index 032dc83..4169004 100644 --- a/tools/mkenvimage.c +++ b/tools/mkenvimage.c @@ -37,6 +37,7 @@ #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> +#include <sys/mman.h> #include "compiler.h" #include <u-boot/crc.h> @@ -208,12 +209,24 @@ int main(int argc, char **argv) } filesize = txt_file_stat.st_size; - /* Read the raw input file and transform it */ - filebuf = malloc(sizeof(*envptr) * filesize); - ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize); - if (ret != sizeof(*envptr) * filesize) { - fprintf(stderr, "Can't read the whole input file\n"); - return EXIT_FAILURE; + + filebuf = mmap(NULL, sizeof(*envptr) * filesize, PROT_READ, + MAP_PRIVATE, txt_fd, 0); + if (filebuf == MAP_FAILED) { + fprintf(stderr, "mmap (%ld bytes) failed: %s\n", + sizeof(*envptr) * filesize, + strerror(errno)); + fprintf(stderr, "Falling back to read()\n"); + + filebuf = malloc(sizeof(*envptr) * filesize); + ret = read(txt_fd, filebuf, sizeof(*envptr) * filesize); + if (ret != sizeof(*envptr) * filesize) { + fprintf(stderr, "Can't read the whole input file (%ld bytes): %s\n", + sizeof(*envptr) * filesize, + strerror(errno)); + + return EXIT_FAILURE; + } } ret = close(txt_fd); } |