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Add more error checks

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This commit is contained in:
Erica Fischer
2025-05-21 12:06:08 -07:00
parent f7fb0686de
commit f4717f765c
1 changed files with 21 additions and 3 deletions
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tile.cpp
+21 -3
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@@ -1076,7 +1076,10 @@ static serial_feature next_feature(decompressor *geoms, std::atomic<long long> *
if (next_feature_state.which_deferral >= next_feature_state.deferrals.size()) {
// done with direct deserialization, done with deferred deserialization
for (auto const fp : next_feature_state.deferrals) {
fclose(fp);
if (fclose(fp) != 0) {
perror("fclose deferral");
exit(EXIT_CLOSE);
}
}
sf.t = -2;
@@ -1084,6 +1087,10 @@ static serial_feature next_feature(decompressor *geoms, std::atomic<long long> *
}
if (fread(&len, sizeof(len), 1, next_feature_state.deferrals[next_feature_state.which_deferral]) != 1) {
if (ferror(next_feature_state.deferrals[next_feature_state.which_deferral])) {
perror("read deferral");
exit(EXIT_READ);
}
next_feature_state.which_deferral++;
continue;
}
@@ -1107,7 +1114,12 @@ static serial_feature next_feature(decompressor *geoms, std::atomic<long long> *
next_feature_state.which_deferral = 0;
for (auto const fp : next_feature_state.deferrals) {
errno = 0;
rewind(fp);
if (errno != 0) {
perror("rewind deferral");
exit(EXIT_SEEK);
}
}
continue;
@@ -1141,8 +1153,14 @@ static serial_feature next_feature(decompressor *geoms, std::atomic<long long> *
next_feature_state.deferrals[next_feature_state.which_deferral] = fp;
}
fwrite(&len, sizeof(len), 1, next_feature_state.deferrals[next_feature_state.which_deferral]);
fwrite(s.c_str(), 1, len, next_feature_state.deferrals[next_feature_state.which_deferral]);
if (fwrite(&len, sizeof(len), 1, next_feature_state.deferrals[next_feature_state.which_deferral]) != 1) {
perror("write deferral length");
exit(EXIT_WRITE);
}
if (fwrite(s.c_str(), 1, len, next_feature_state.deferrals[next_feature_state.which_deferral]) != (size_t) len) {
perror("write deferral");
exit(EXIT_WRITE);
}
// limit the maximum depth of deferral,
// because even at z0 we will run out of file descriptors