#include <sys/processor.h>
#include <sys/zfs_context.h>
#include <sys/utsname.h>
+#include <sys/time.h>
#include <sys/systeminfo.h>
/*
int fd;
vnode_t *vp;
int old_umask;
- char realpath[MAXPATHLEN];
+ char *realpath;
struct stat64 st;
int err;
+ realpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
+
/*
* If we're accessing a real disk from userland, we need to use
* the character interface to avoid caching. This is particularly
* for its size. So -- gag -- we open the block device to get
* its size, and remember it for subsequent VOP_GETATTR().
*/
+#if defined(__sun__) || defined(__sun)
if (strncmp(path, "/dev/", 5) == 0) {
+#else
+ if (0) {
+#endif
char *dsk;
fd = open64(path, O_RDONLY);
- if (fd == -1)
- return (errno);
+ if (fd == -1) {
+ err = errno;
+ free(realpath);
+ return (err);
+ }
if (fstat64(fd, &st) == -1) {
+ err = errno;
close(fd);
- return (errno);
+ free(realpath);
+ return (err);
}
close(fd);
(void) sprintf(realpath, "%s", path);
dsk + 1);
} else {
(void) sprintf(realpath, "%s", path);
- if (!(flags & FCREAT) && stat64(realpath, &st) == -1)
- return (errno);
+ if (!(flags & FCREAT) && stat64(realpath, &st) == -1) {
+ err = errno;
+ free(realpath);
+ return (err);
+ }
+ }
+
+ if (!(flags & FCREAT) && S_ISBLK(st.st_mode)) {
+#ifdef __linux__
+ flags |= O_DIRECT;
+#endif
+ /* We shouldn't be writing to block devices in userspace */
+ VERIFY(!(flags & FWRITE));
}
if (flags & FCREAT)
* FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR.
*/
fd = open64(realpath, flags - FREAD, mode);
+ free(realpath);
if (flags & FCREAT)
(void) umask(old_umask);
if (fd == -1)
return (errno);
- if (fstat64(fd, &st) == -1) {
+ if (fstat64_blk(fd, &st) == -1) {
err = errno;
close(fd);
return (err);
}
}
+#ifdef __linux__
+ if (rc == -1 && errno == EINVAL) {
+ /*
+ * Under Linux, this most likely means an alignment issue
+ * (memory or disk) due to O_DIRECT, so we abort() in order to
+ * catch the offender.
+ */
+ abort();
+ }
+#endif
if (rc == -1)
return (errno);
fop_getattr(vnode_t *vp, vattr_t *vap)
{
struct stat64 st;
+ int err;
- if (fstat64(vp->v_fd, &st) == -1) {
+ if (fstat64_blk(vp->v_fd, &st) == -1) {
+ err = errno;
close(vp->v_fd);
- return (errno);
+ return (err);
}
vap->va_size = st.st_size;
umem_free(ksid, sizeof (ksiddomain_t));
}
-/*
- * Do not change the length of the returned string; it must be freed
- * with strfree().
- */
char *
-kmem_asprintf(const char *fmt, ...)
+kmem_vasprintf(const char *fmt, va_list adx)
{
- int size;
- va_list adx;
- char *buf;
+ char *buf = NULL;
+ va_list adx_copy;
- va_start(adx, fmt);
- size = vsnprintf(NULL, 0, fmt, adx) + 1;
- va_end(adx);
+ va_copy(adx_copy, adx);
+ VERIFY(vasprintf(&buf, fmt, adx_copy) != -1);
+ va_end(adx_copy);
- buf = kmem_alloc(size, KM_SLEEP);
+ return (buf);
+}
+
+char *
+kmem_asprintf(const char *fmt, ...)
+{
+ char *buf = NULL;
+ va_list adx;
va_start(adx, fmt);
- size = vsnprintf(buf, size, fmt, adx);
+ VERIFY(vasprintf(&buf, fmt, adx) != -1);
va_end(adx);
return (buf);