Verbosly fail if the target environment size or the padding byte are badly formated.
Verbosly fail if something bad happens when reading from standard input.
Signed-off-by: David Wagner david.wagner@free-electrons.com --- tools/mkenvimage.c | 31 +++++++++++++++++++++++++++++-- 1 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/tools/mkenvimage.c b/tools/mkenvimage.c index 810a89e..cc1deec 100644 --- a/tools/mkenvimage.c +++ b/tools/mkenvimage.c @@ -63,6 +63,24 @@ static void usage(const char *exec_name) exec_name); }
+long int xstrtol(const char *s) +{ + long int tmp; + + errno = 0; + tmp = strtol(s, NULL, 0); + if (!errno) + return tmp; + + if (errno == ERANGE) + fprintf(stderr, "Bad integer format: %s\n", s); + else + fprintf(stderr, "Error while parsing %s: %s\n", s, + strerror(errno)); + + exit(EXIT_FAILURE); +} + int main(int argc, char **argv) { uint32_t crc, targetendian_crc; @@ -92,7 +110,7 @@ int main(int argc, char **argv) while ((option = getopt(argc, argv, ":s:o:rbp:hV")) != -1) { switch (option) { case 's': - datasize = strtol(optarg, NULL, 0); + datasize = xstrtol(optarg); break; case 'o': bin_filename = strdup(optarg); @@ -108,7 +126,7 @@ int main(int argc, char **argv) bigendian = 1; break; case 'p': - padbyte = strtol(optarg, NULL, 0); + padbyte = xstrtol(optarg); break; case 'h': usage(prg); @@ -166,7 +184,16 @@ int main(int argc, char **argv)
do { filebuf = realloc(filebuf, readlen); + if (!filebuf) { + fprintf(stderr, "Can't realloc memory for the input file buffer\n"); + return EXIT_FAILURE; + } readbytes = read(txt_fd, filebuf + filesize, readlen); + if (errno) { + fprintf(stderr, "Error while reading stdin: %s\n", + strerror(errno)); + return EXIT_FAILURE; + } filesize += readbytes; } while (readbytes == readlen);