X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=lib%2Flibzpool%2Fkernel.c;h=69fbd44cd1ff03612caec37db11754538caf59b7;hb=4b787d75c869a7f633607ecb17f3a7c482a553d2;hp=494e544ea7f8ba8746f0909f2de0921e1b0a1e4f;hpb=00b46022c676e402e3f33ce93ee2983bbad2c46f;p=zfs.git

diff --git a/lib/libzpool/kernel.c b/lib/libzpool/kernel.c
index 494e544..69fbd44 100644
--- a/lib/libzpool/kernel.c
+++ b/lib/libzpool/kernel.c
@@ -35,6 +35,7 @@
 #include <sys/processor.h>
 #include <sys/zfs_context.h>
 #include <sys/utsname.h>
+#include <sys/time.h>
 #include <sys/systeminfo.h>
 
 /*
@@ -533,7 +534,11 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
 	 * 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) {
@@ -562,6 +567,14 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
 		}
 	}
 
+	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)
 		old_umask = umask(0);
 
@@ -578,7 +591,7 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
 	if (fd == -1)
 		return (errno);
 
-	if (fstat64(fd, &st) == -1) {
+	if (fstat64_blk(fd, &st) == -1) {
 		err = errno;
 		close(fd);
 		return (err);
@@ -637,6 +650,16 @@ vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset,
 		}
 	}
 
+#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);
 
@@ -665,18 +688,18 @@ int
 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;
 	return (0);
 }
 
-#ifdef ZFS_DEBUG
-
 /*
  * =========================================================================
  * Figure out which debugging statements to print
@@ -789,8 +812,6 @@ __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
 	}
 }
 
-#endif /* ZFS_DEBUG */
-
 /*
  * =========================================================================
  * cmn_err() and panic()