diff options
| -rw-r--r-- | tccrun.c | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -59,18 +59,25 @@ LIBTCCAPI int tcc_relocate(TCCState *s1, void *ptr) return ret; #ifdef HAVE_SELINUX - { /* Use mmap instead of malloc for Selinux. */ + { /* Use mmap instead of malloc for Selinux. Ref: + http://www.gnu.org/s/libc/manual/html_node/File-Size.html */ + + char tmpfname[] = "/tmp/.tccrunXXXXXX"; + int fd = mkstemp (tmpfname); + s1->mem_size = ret; + unlink (tmpfname); + ftruncate (fd, s1->mem_size); s1->write_mem = mmap (NULL, ret, PROT_READ|PROT_WRITE, - MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + MAP_SHARED, fd, 0); if (s1->write_mem == MAP_FAILED) - tcc_error("mmap not writeable"); + tcc_error("/tmp not writeable"); s1->runtime_mem = mmap (NULL, ret, PROT_READ|PROT_EXEC, - MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + MAP_SHARED, fd, 0); if (s1->runtime_mem == MAP_FAILED) - tcc_error("mmap not executable"); + tcc_error("/tmp not executable"); ret = tcc_relocate_ex(s1, s1->write_mem); } |