+#include <errno.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
-#include <errno.h>
+#include "log.h"
#include "util.h"
using namespace std;
char filename[] = "/tmp/cubemap.XXXXXX";
int fd = mkstemp(filename);
if (fd == -1) {
- perror("mkstemp");
+ log_perror("mkstemp");
return -1;
}
if (unlink(filename) == -1) {
- perror("unlink");
+ log_perror("unlink");
// Can still continue;
}
while (to_write > 0) {
ssize_t ret = write(fd, ptr, to_write);
if (ret == -1) {
- perror("write");
+ log_perror("write");
close(fd);
return -1;
}
bool read_tempfile(int fd, std::string *contents)
{
+ bool ok = true;
+ ssize_t ret, has_read;
+
+ off_t len = lseek(fd, 0, SEEK_END);
+ if (len == -1) {
+ log_perror("lseek");
+ ok = false;
+ goto done;
+ }
+
+ contents->resize(len);
+
if (lseek(fd, 0, SEEK_SET) == -1) {
- perror("lseek");
- return false;
+ log_perror("lseek");
+ ok = false;
+ goto done;
}
- char buf[4096];
- for ( ;; ) {
- ssize_t ret = read(fd, buf, sizeof(buf));
+ has_read = 0;
+ while (has_read < len) {
+ ret = read(fd, &((*contents)[has_read]), len - has_read);
if (ret == -1) {
- perror("read");
- return false;
+ log_perror("read");
+ ok = false;
+ goto done;
}
if (ret == 0) {
- // EOF.
- break;
+ log(ERROR, "Unexpected EOF!");
+ ok = false;
+ goto done;
}
-
- contents->append(string(buf, buf + ret));
+ has_read += ret;
}
- int ret;
+done:
do {
ret = close(fd); // Implicitly deletes the files.
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
- perror("close");
+ log_perror("close");
// Can still continue.
}
- return true;
+ return ok;
}