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#include <fcntl.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include "util.h"
// Relaxed error checking/reporting is fine because exec'd
// program will report a missing file if the function fails.
void move_tmpicc(const char* emul)
{
char buf[1024];
struct stat st;
int bytes, src, dst;
const char* real = emul + EMULDIR_LEN;
const char* tail = real + (sizeof("/tmp/i") - 1);
if(strncmp(tail, "cc", 2) != 0 && strncmp(tail, "po_icc", 6) != 0)
return;
if(stat(real, &st) == 0)
return;
if(stat(emul, &st) < 0 || !(st.st_mode & S_IFREG))
return;
src = open(emul, O_RDONLY, 0644);
dst = open(real, O_WRONLY|O_CREAT|O_EXCL, st.st_mode);
while((bytes = read(src, buf, sizeof(buf))) > 0) {
if(write(dst, buf, bytes) != bytes) {
bytes = -1;
break;
}
}
if(src >= 0)
close(src);
if(dst >= 0 && close(dst) < 0)
bytes = -1;
if(bytes < 0 || unlink(emul) < 0)
unlink(real);
}
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