int NaClHostDescOpen(struct NaClHostDesc *d,
char const *path,
int flags,
int mode) {
int host_desc;
struct stat stbuf;
NaClLog(3, "NaClHostDescOpen(0x%08"NACL_PRIxPTR", %s, 0x%x, 0x%x)\n",
(uintptr_t) d, path, flags, mode);
if (NULL == d) {
NaClLog(LOG_FATAL, "NaClHostDescOpen: 'this' is NULL\n");
}
/*
* Sanitize access flags.
*/
if (0 != (flags & ~NACL_ALLOWED_OPEN_FLAGS)) {
return -NACL_ABI_EINVAL;
}
switch (flags & NACL_ABI_O_ACCMODE) {
case NACL_ABI_O_RDONLY:
case NACL_ABI_O_WRONLY:
case NACL_ABI_O_RDWR:
break;
default:
NaClLog(LOG_ERROR,
"NaClHostDescOpen: bad access flags 0x%x.\n",
flags);
return -NACL_ABI_EINVAL;
}
flags = NaClMapOpenFlags(flags);
mode = NaClMapOpenPerm(mode);
NaClLog(3, "NaClHostDescOpen: invoking POSIX open(%s,0x%x,0%o)\n",
path, flags, mode);
host_desc = open(path, flags, mode);
NaClLog(3, "NaClHostDescOpen: got descriptor %d\n", host_desc);
if (-1 == host_desc) {
NaClLog(LOG_ERROR,
"NaClHostDescOpen: open returned -1, errno %d\n", errno);
return -NaClXlateErrno(errno);
}
if (-1 == fstat(host_desc, &stbuf)) {
NaClLog(LOG_ERROR,
"NaClHostDescOpen: fstat failed?!? errno %d\n", errno);
(void) close(host_desc);
return -NaClXlateErrno(errno);
}
if (!S_ISREG(stbuf.st_mode)) {
NaClLog(LOG_INFO,
"NaClHostDescOpen: file type 0x%x, not regular\n", stbuf.st_mode);
(void) close(host_desc);
/* cannot access anything other than a real file */
return -NACL_ABI_EPERM;
}
// return NaClHostDescCtor(d, host_desc, NULL); /* d'b ### */
return NaClHostDescCtor(d, host_desc);
}
int NaClHostDescOpen(struct NaClHostDesc *d,
char const *path,
int flags,
int mode) {
int host_desc;
int posix_flags;
NaClLog(3, "NaClHostDescOpen(0x%08"NACL_PRIxPTR", %s, 0x%x, 0x%x)\n",
(uintptr_t) d, path, flags, mode);
if (NULL == d) {
NaClLog(LOG_FATAL, "NaClHostDescOpen: 'this' is NULL\n");
}
/*
* Sanitize access flags.
*/
if (0 != (flags & ~NACL_ALLOWED_OPEN_FLAGS)) {
return -NACL_ABI_EINVAL;
}
switch (flags & NACL_ABI_O_ACCMODE) {
case NACL_ABI_O_RDONLY:
case NACL_ABI_O_WRONLY:
case NACL_ABI_O_RDWR:
break;
default:
NaClLog(LOG_ERROR,
"NaClHostDescOpen: bad access flags 0x%x.\n",
flags);
return -NACL_ABI_EINVAL;
}
posix_flags = NaClMapOpenFlags(flags);
#if NACL_LINUX
posix_flags |= O_LARGEFILE;
#endif
mode = NaClMapOpenPerm(mode);
NaClLog(3, "NaClHostDescOpen: invoking POSIX open(%s,0x%x,0%o)\n",
path, posix_flags, mode);
host_desc = open(path, posix_flags, mode);
NaClLog(3, "NaClHostDescOpen: got descriptor %d\n", host_desc);
if (-1 == host_desc) {
NaClLog(2, "NaClHostDescOpen: open returned -1, errno %d\n", errno);
return -NaClXlateErrno(errno);
}
return NaClHostDescCtor(d, host_desc, flags);
}