diff options
| -rw-r--r-- | tools/mkenvimage.c | 39 |
1 files changed, 14 insertions, 25 deletions
diff --git a/tools/mkenvimage.c b/tools/mkenvimage.c index 64f5340..d344456 100644 --- a/tools/mkenvimage.c +++ b/tools/mkenvimage.c @@ -45,12 +45,9 @@ static void usage(const char *exec_name) { - fprintf(stderr, "%s [-h] [-r] [-b] [-p <byte>] " - "-s <environment partition size> -o <output> <input file>\n" + fprintf(stderr, "%s [-h] [-r] [-b] [-p <byte>] -s <environment partition size> -o <output> <input file>\n" "\n" - "This tool takes a key=value input file (same as would a " - "`printenv' show) and generates the corresponding environment " - "image, ready to be flashed.\n" + "This tool takes a key=value input file (same as would a `printenv' show) and generates the corresponding environment image, ready to be flashed.\n" "\n" "\tThe input file is in format:\n" "\t\tkey1=value1\n" @@ -58,8 +55,7 @@ static void usage(const char *exec_name) "\t\t...\n" "\t-r : the environment has multiple copies in flash\n" "\t-b : the target is big endian (default is little endian)\n" - "\t-p <byte> : fill the image with <byte> bytes instead of " - "0xff bytes\n" + "\t-p <byte> : fill the image with <byte> bytes instead of 0xff bytes\n" "\t-V : print version information and exit\n" "\n" "If the input file is \"-\", data is read from standard input\n", @@ -100,8 +96,7 @@ int main(int argc, char **argv) case 'o': bin_filename = strdup(optarg); if (!bin_filename) { - fprintf(stderr, "Can't strdup() the output " - "filename\n"); + fprintf(stderr, "Can't strdup() the output filename\n"); return EXIT_FAILURE; } break; @@ -134,22 +129,21 @@ int main(int argc, char **argv) /* Check datasize and allocate the data */ if (datasize == 0) { - fprintf(stderr, - "Please specify the size of the environment " - "partition.\n"); + fprintf(stderr, "Please specify the size of the environment partition.\n"); usage(prg); return EXIT_FAILURE; } dataptr = malloc(datasize * sizeof(*dataptr)); if (!dataptr) { - fprintf(stderr, "Can't alloc dataptr.\n"); + fprintf(stderr, "Can't alloc %d bytes for dataptr.\n", + datasize); return EXIT_FAILURE; } /* * envptr points to the beginning of the actual environment (after the - * crc and possible `redundant' bit + * crc and possible `redundant' byte */ envsize = datasize - (CRC_SIZE + redundant); envptr = dataptr + CRC_SIZE + redundant; @@ -185,8 +179,8 @@ int main(int argc, char **argv) /* ... and check it */ ret = fstat(txt_fd, &txt_file_stat); if (ret == -1) { - fprintf(stderr, "Can't stat() on \"%s\": " - "%s\n", txt_filename, strerror(errno)); + fprintf(stderr, "Can't stat() on \"%s\": %s\n", + txt_filename, strerror(errno)); return EXIT_FAILURE; } @@ -200,13 +194,9 @@ int main(int argc, char **argv) } ret = close(txt_fd); } - /* - * The right test to do is "=>" (not ">") because of the additional - * ending \0. See below. - */ - if (filesize >= envsize) { - fprintf(stderr, "The input file is larger than the " - "environment partition size\n"); + /* The +1 is for the additionnal ending \0. See below. */ + if (filesize + 1 > envsize) { + fprintf(stderr, "The input file is larger than the environment partition size\n"); return EXIT_FAILURE; } @@ -255,8 +245,7 @@ int main(int argc, char **argv) * check the env size again to make sure we have room for two \0 */ if (ep >= envsize) { - fprintf(stderr, "The environment file is too large for " - "the target environment storage\n"); + fprintf(stderr, "The environment file is too large for the target environment storage\n"); return EXIT_FAILURE; } envptr[ep] = '\0'; |