libburnia/libisofs
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Interpreting the return values of fwrite() in demo/demo.c

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This commit is contained in:
Thomas Schmitt 2011-03-11 09:09:39 +01:00
parent 10e3b2939a
commit d8a56f60ef
1 changed files with 22 additions and 5 deletions
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27
demo/demo.c
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@ -50,6 +50,7 @@ static char helptext[][80] = {
#include <fcntl.h> #include <fcntl.h>
#include <err.h> #include <err.h>
#include <limits.h> #include <limits.h>
#include <errno.h>
#ifndef PATH_MAX #ifndef PATH_MAX
@ -372,7 +373,11 @@ int gesture_iso(int argc, char **argv)
iso_write_opts_free(opts); iso_write_opts_free(opts);
while (burn_src->read_xt(burn_src, buf, 2048) == 2048) { while (burn_src->read_xt(burn_src, buf, 2048) == 2048) {
fwrite(buf, 1, 2048, fp); result = fwrite(buf, 1, 2048, fp);
if (result < 2048) {
printf ("Cannot write block. errno= %d\n", errno);
goto ex;
}
} }
fclose(fp); fclose(fp);
burn_src->free_data(burn_src); burn_src->free_data(burn_src);
@ -537,7 +542,7 @@ int gesture_iso_read(int argc, char **argv)
int gesture_iso_cat(int argc, char **argv) int gesture_iso_cat(int argc, char **argv)
{ {
int res; int res, write_ret;
IsoFilesystem *fs; IsoFilesystem *fs;
IsoFileSource *file; IsoFileSource *file;
struct stat info; struct stat info;
@ -596,7 +601,11 @@ int gesture_iso_cat(int argc, char **argv)
return 1; return 1;
} }
while ((res = iso_file_source_read(file, buf, 1024)) > 0) { while ((res = iso_file_source_read(file, buf, 1024)) > 0) {
fwrite(buf, 1, res, stdout); write_ret = fwrite(buf, 1, res, stdout);
if (write_ret < res) {
printf ("Cannot write block to stdout. errno= %d\n", errno);
return 1;
}
} }
if (res < 0) { if (res < 0) {
fprintf(stderr, "Error reading, err = %d\n", res); fprintf(stderr, "Error reading, err = %d\n", res);
@ -700,7 +709,11 @@ int gesture_iso_modify(int argc, char **argv)
iso_write_opts_free(opts); iso_write_opts_free(opts);
while (burn_src->read_xt(burn_src, buf, 2048) == 2048) { while (burn_src->read_xt(burn_src, buf, 2048) == 2048) {
fwrite(buf, 1, 2048, fp); result = fwrite(buf, 1, 2048, fp);
if (result < 2048) {
printf ("Cannot write block. errno= %d\n", errno);
goto ex;
}
} }
fclose(fp); fclose(fp);
burn_src->free_data(burn_src); burn_src->free_data(burn_src);
@ -814,7 +827,11 @@ int gesture_iso_ms(int argc, char **argv)
iso_write_opts_free(opts); iso_write_opts_free(opts);
while (burn_src->read_xt(burn_src, buf, 2048) == 2048) { while (burn_src->read_xt(burn_src, buf, 2048) == 2048) {
fwrite(buf, 1, 2048, fp); result = fwrite(buf, 1, 2048, fp);
if (result < 2048) {
printf ("Cannot write block. errno= %d\n", errno);
goto ex;
}
} }
fclose(fp); fclose(fp);
burn_src->free_data(burn_src); burn_src->free_data(burn_src);