From: Antonio Ospite Date: Thu, 10 May 2012 10:13:03 +0000 (+0200) Subject: picoproj: replace mmap() with more portable file stream operations X-Git-Tag: v0.1.3~37^2~3 X-Git-Url: https://git.ao2.it/libam7xxx.git/commitdiff_plain/32c2367eaf9e77dca72a12a224cc8267976bce14?ds=inline picoproj: replace mmap() with more portable file stream operations This makes picoproj compile for Windows, for instance. --- diff --git a/examples/picoproj.c b/examples/picoproj.c index 79927c2..8503612 100644 --- a/examples/picoproj.c +++ b/examples/picoproj.c @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include @@ -58,7 +57,7 @@ int main(int argc, char *argv[]) int opt; char filename[FILENAME_MAX] = {0}; - int image_fd; + FILE *image_fp; struct stat st; am7xxx_context *ctx; am7xxx_device *dev; @@ -144,31 +143,43 @@ int main(int argc, char *argv[]) goto out; } - image_fd = open(filename, O_RDONLY); - if (image_fd < 0) { - perror("open"); + image_fp = fopen(filename, "rb"); + if (image_fp == NULL) { + perror("fopen"); exit_code = EXIT_FAILURE; goto out; } - if (fstat(image_fd, &st) < 0) { + if (fstat(fileno(image_fp), &st) < 0) { perror("fstat"); exit_code = EXIT_FAILURE; - goto out_close_image_fd; + goto out_close_image_fp; } size = st.st_size; - image = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, image_fd, 0); + image = malloc(size * sizeof(unsigned char)); if (image == NULL) { - perror("mmap"); + perror("malloc"); exit_code = EXIT_FAILURE; - goto out_close_image_fd; + goto out_close_image_fp; + } + + ret = fread(image, size, 1, image_fp); + if (ret != 1) { + if (feof(image_fp)) + fprintf(stderr, "Unexpected end of file.\n"); + else if (ferror(image_fp)) + perror("fread"); + else + fprintf(stderr, "Unexpected error condition.\n"); + + goto out_free_image; } ret = am7xxx_init(&ctx); if (ret < 0) { perror("am7xxx_init"); exit_code = EXIT_FAILURE; - goto out_munmap; + goto out_free_image; } am7xxx_set_log_level(ctx, log_level); @@ -227,15 +238,13 @@ int main(int argc, char *argv[]) cleanup: am7xxx_shutdown(ctx); -out_munmap: - ret = munmap(image, size); - if (ret < 0) - perror("munmap"); +out_free_image: + free(image); -out_close_image_fd: - ret = close(image_fd); - if (ret < 0) - perror("close"); +out_close_image_fp: + ret = fclose(image_fp); + if (ret == EOF) + perror("fclose"); out: exit(exit_code);