* sysdeps/unix/sysv/linux/ia64/bits/shm.h (shmatt_t): New type.

(struct shmid_ds): Use it for shm_nattch field.

2005-11-18  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/futimesat.c (futimesat): If FILE is NULL,
	set access and modification times of the file referenced by FD.
	* sysdeps/generic/futimesat.c (futimesat): Don't return EINVAL if
	FILE is NULL.  Don't check FD if FILE is absolute path.

2005-11-19  Ulrich Drepper  <drepper@redhat.com>

	* nscd/nscd_gethst_r.c (nscd_gethst_r): Avoid unnecesary read call
	if there are no aliases.

	* sysdeps/unix/sysv/linux/Makefile (CFLAGS-connections.c,
	CFLAGS-pwdcache.c, CFLAGS-grpcache.c, CFLAGS-hstcache.c,
	CFLAGS-aicache.c, CFLAGS-initgrcache.c): Add -DHAVE_SENDFILE.
	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDFILE):
	Define.
	* nscd/pwdcache.c [HAVE_SENDFILE]: Include <sys/sendfile.h> and
	<kernel-features.h>.
	[HAVE_SENDFILE] (cache_addpw): Use sendfile to transmit positive
	result.
	* nscd/grpcache.c: Likewise.
	* nscd/hstcache.c: Likewise.
	* nscd/aicache.c: Likewise.
	* nscd/initgrcache.c: Likewise.
	* nscd/connectionc.c: Likewise.

ChangeLog

@@ -1,3 +1,35 @@
+2005-11-19  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/unix/sysv/linux/ia64/bits/shm.h (shmatt_t): New type.
+	(struct shmid_ds): Use it for shm_nattch field.
+
+2005-11-18  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/unix/sysv/linux/futimesat.c (futimesat): If FILE is NULL,
+	set access and modification times of the file referenced by FD.
+	* sysdeps/generic/futimesat.c (futimesat): Don't return EINVAL if
+	FILE is NULL.  Don't check FD if FILE is absolute path.
+
+2005-11-19  Ulrich Drepper  <drepper@redhat.com>
+
+	* nscd/nscd_gethst_r.c (nscd_gethst_r): Avoid unnecesary read call
+	if there are no aliases.
+
+	* sysdeps/unix/sysv/linux/Makefile (CFLAGS-connections.c,
+	CFLAGS-pwdcache.c, CFLAGS-grpcache.c, CFLAGS-hstcache.c,
+	CFLAGS-aicache.c, CFLAGS-initgrcache.c): Add -DHAVE_SENDFILE.
+	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDFILE):
+	Define.
+	* nscd/pwdcache.c [HAVE_SENDFILE]: Include <sys/sendfile.h> and
+	<kernel-features.h>.
+	[HAVE_SENDFILE] (cache_addpw): Use sendfile to transmit positive
+	result.
+	* nscd/grpcache.c: Likewise.
+	* nscd/hstcache.c: Likewise.
+	* nscd/aicache.c: Likewise.
+	* nscd/initgrcache.c: Likewise.
+	* nscd/connectionc.c: Likewise.
+
 2005-11-18  Andreas Schwab  <schwab@suse.de>
 
 	* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Remove useless alias.

nscd/aicache.c

@@ -26,8 +26,15 @@
 #include <time.h>
 #include <unistd.h>
 #include <sys/mman.h>
-#include <dbg_log.h>
+#ifdef HAVE_SENDFILE
-#include <nscd.h>
+# include <sys/sendfile.h>
+#endif
+
+#include "dbg_log.h"
+#include "nscd.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 
 typedef enum nss_status (*nss_gethostbyname3_r)
@@ -365,7 +372,30 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
 		     wait.  */
 		  assert (fd != -1);
 
-		  writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+		  if (__builtin_expect (db->mmap_used, 1))
+		    {
+		      assert (db->wr_fd != -1);
+		      assert ((char *) &dataset->resp > (char *) db->data);
+		      assert ((char *) &dataset->resp - (char *) db->head
+			      + total
+			      <= (sizeof (struct database_pers_head)
+				  + db->head->module * sizeof (ref_t)
+				  + db->head->data_size));
+		      off_t off = (char *) &dataset->resp - (char *) db->head;
+		      ssize_t written;
+		      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+		      if (written == -1 && errno == ENOSYS)
+			goto use_write;
+# endif
+		    }
+		  else
+# ifndef __ASSUME_SENDFILE
+		  use_write:
+# endif
+#endif
+		    writeall (fd, &dataset->resp, total);
 		}
 
 	      goto out;

nscd/connections.c

@@ -39,6 +39,9 @@
 #include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/poll.h>
+#ifdef HAVE_SENDFILE
+# include <sys/sendfile.h>
+#endif
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/un.h>
@@ -46,6 +49,9 @@
 #include "nscd.h"
 #include "dbg_log.h"
 #include "selinux.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 
 /* Wrapper functions with error checking for standard functions.  */
@@ -939,8 +945,33 @@ cannot handle old request version %d; current version is %d"),
       if (cached != NULL)
 	{
 	  /* Hurray it's in the cache.  */
-	  if (writeall (fd, cached->data, cached->recsize)
+	  ssize_t nwritten;
-	      != cached->recsize
+
+#ifdef HAVE_SENDFILE
+	  if (db->mmap_used || !cached->notfound)
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) cached->data > (char *) db->data);
+	      assert ((char *) cached->data - (char *) db->head
+		      + cached->recsize
+		      <= (sizeof (struct database_pers_head)
+			  + db->head->module * sizeof (ref_t)
+			  + db->head->data_size));
+	      off_t off = (char *) cached->data - (char *) db->head;
+	      nwritten = sendfile (fd, db->wr_fd, &off, cached->recsize);
+# ifndef __ASSUME_SENDFILE
+	      if (nwritten == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    nwritten = writeall (fd, cached->data, cached->recsize);
+
+	  if (nwritten != cached->recsize
 	      && __builtin_expect (debug_level, 0) > 0)
 	    {
 	      /* We have problems sending the result.  */

nscd/grpcache.c

@@ -32,11 +32,17 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/mman.h>
+#ifdef HAVE_SENDFILE
+# include <sys/sendfile.h>
+#endif
 #include <sys/socket.h>
 #include <stackinfo.h>
 
 #include "nscd.h"
 #include "dbg_log.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 /* This is the standard reply in case the service is disabled.  */
 static const gr_response_header disabled =
@@ -294,7 +300,29 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
 	     unnecessarily let the receiver wait.  */
 	  assert (fd != -1);
 
-	  written = writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+	  if (__builtin_expect (db->mmap_used, 1))
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) &dataset->resp > (char *) db->data);
+	      assert ((char *) &dataset->resp - (char *) db->head
+		      + total
+		      <= (sizeof (struct database_pers_head)
+			  + db->head->module * sizeof (ref_t)
+			  + db->head->data_size));
+	      off_t off = (char *) &dataset->resp - (char *) db->head;
+	      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+	      if (written == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    written = writeall (fd, &dataset->resp, total);
 	}
 
       /* Add the record to the database.  But only if it has not been

nscd/hstcache.c

@@ -34,10 +34,16 @@
 #include <arpa/inet.h>
 #include <arpa/nameser.h>
 #include <sys/mman.h>
+#ifdef HAVE_SENDFILE
+# include <sys/sendfile.h>
+#endif
 #include <stackinfo.h>
 
 #include "nscd.h"
 #include "dbg_log.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 
 /* This is the standard reply in case the service is disabled.  */
@@ -328,7 +334,29 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req,
 	     unnecessarily keep the receiver waiting.  */
 	  assert (fd != -1);
 
-	  written = writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+	  if (__builtin_expect (db->mmap_used, 1))
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) &dataset->resp > (char *) db->data);
+	      assert ((char *) &dataset->resp - (char *) db->head
+		      + total
+		      <= (sizeof (struct database_pers_head)
+			  + db->head->module * sizeof (ref_t)
+			  + db->head->data_size));
+	      off_t off = (char *) &dataset->resp - (char *) db->head;
+	      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+	      if (written == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    written = writeall (fd, &dataset->resp, total);
 	}
 
       /* Add the record to the database.  But only if it has not been

nscd/initgrcache.c

@@ -26,8 +26,15 @@
 #include <time.h>
 #include <unistd.h>
 #include <sys/mman.h>
-#include <dbg_log.h>
+#ifdef HAVE_SENDFILE
-#include <nscd.h>
+# include <sys/sendfile.h>
+#endif
+
+#include "dbg_log.h"
+#include "nscd.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 #include "../nss/nsswitch.h"
 
@@ -344,7 +351,29 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req,
 	     unnecessarily let the receiver wait.  */
 	  assert (fd != -1);
 
-	  written = writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+	  if (__builtin_expect (db->mmap_used, 1))
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) &dataset->resp > (char *) db->data);
+	      assert ((char *) &dataset->resp - (char *) db->head
+		      + total
+		      <= (sizeof (struct database_pers_head)
+			  + db->head->module * sizeof (ref_t)
+			  + db->head->data_size));
+	      off_t off = (char *) &dataset->resp - (char *) db->head;
+	      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+	      if (written == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    written = writeall (fd, &dataset->resp, total);
 	}
 
 

nscd/pwdcache.c

@@ -32,11 +32,17 @@
 #include <time.h>
 #include <unistd.h>
 #include <sys/mman.h>
+#ifdef HAVE_SENDFILE
+# include <sys/sendfile.h>
+#endif
 #include <sys/socket.h>
 #include <stackinfo.h>
 
 #include "nscd.h"
 #include "dbg_log.h"
+#ifdef HAVE_SENDFILE
+# include <kernel-features.h>
+#endif
 
 /* This is the standard reply in case the service is disabled.  */
 static const pw_response_header disabled =
@@ -289,7 +295,29 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 	     unnecessarily let the receiver wait.  */
 	  assert (fd != -1);
 
-	  written = writeall (fd, &dataset->resp, total);
+#ifdef HAVE_SENDFILE
+	  if (__builtin_expect (db->mmap_used, 1))
+	    {
+	      assert (db->wr_fd != -1);
+	      assert ((char *) &dataset->resp > (char *) db->data);
+	      assert ((char *) &dataset->resp - (char *) db->head
+		      + total
+		      <= (sizeof (struct database_pers_head)
+                          + db->head->module * sizeof (ref_t)
+                          + db->head->data_size));
+	      off_t off = (char *) &dataset->resp - (char *) db->head;
+	      written = sendfile (fd, db->wr_fd, &off, total);
+# ifndef __ASSUME_SENDFILE
+	      if (written == -1 && errno == ENOSYS)
+		goto use_write;
+# endif
+	    }
+	  else
+# ifndef __ASSUME_SENDFILE
+	  use_write:
+# endif
+#endif
+	    written = writeall (fd, &dataset->resp, total);
 	}
 
 

sysdeps/generic/futimesat.c

@@ -30,18 +30,14 @@ futimesat (fd, file, tvp)
      const char *file;
      const struct timeval tvp[2];
 {
-  if (fd < 0 && fd != AT_FDCWD)
+  if (fd < 0
+      && (file == NULL
+          || (fd != AT_FDCWD && file[0] != '/')))
     {
       __set_errno (EBADF);
       return -1;
     }
 
-  if (file == NULL)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-
   __set_errno (ENOSYS);
   return -1;
 }

sysdeps/unix/sysv/linux/Makefile

@@ -152,6 +152,11 @@ CFLAGS-mq_receive.c += -fexceptions
 endif
 
 ifeq ($(subdir),nscd)
-CFLAGS-connections.c += -DHAVE_EPOLL
+CFLAGS-connections.c += -DHAVE_EPOLL -DHAVE_SENDFILE
+CFLAGS-pwdcache.c += -DHAVE_SENDFILE
+CFLAGS-grpcache.c += -DHAVE_SENDFILE
+CFLAGS-hstcache.c += -DHAVE_SENDFILE
+CFLAGS-aicache.c += -DHAVE_SENDFILE
+CFLAGS-initgrcache.c += -DHAVE_SENDFILE
 CFLAGS-gai.c += -DNEED_NETLINK
 endif

sysdeps/unix/sysv/linux/futimesat.c

@@ -37,7 +37,22 @@ futimesat (fd, file, tvp)
 {
   char *buf = NULL;
 
-  if (fd != AT_FDCWD && file[0] != '/')
+  if (file == NULL)
+    {
+      static const char procfd[] = "/proc/self/fd/%d";
+      /* Buffer for the path name we are going to use.  It consists of
+	 - the string /proc/self/fd/
+	 - the file descriptor number.
+	 The final NUL is included in the sizeof.   A bit of overhead
+	 due to the format elements compensates for possible negative
+	 numbers.  */
+      size_t buflen = sizeof (procfd) + sizeof (int) * 3;
+      buf = alloca (buflen);
+
+      __snprintf (buf, buflen, procfd, fd);
+      file = buf;
+    }
+  else if (fd != AT_FDCWD && file[0] != '/')
     {
       size_t filelen = strlen (file);
       static const char procfd[] = "/proc/self/fd/%d/%s";

sysdeps/unix/sysv/linux/ia64/bits/shm.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -38,6 +38,8 @@
 /* Segment low boundary address multiple.  */
 #define SHMLBA		(1024 * 1024)
 
+/* Type to count number of attaches.  */
+typedef unsigned long int shmatt_t;
 
 /* Data structure describing a set of semaphores.  */
 struct shmid_ds
@@ -49,7 +51,7 @@ struct shmid_ds
     __time_t shm_ctime;			/* time of last change by shmctl() */
     __pid_t shm_cpid;			/* pid of creator */
     __pid_t shm_lpid;			/* pid of last shmop */
-    unsigned long int shm_nattch;	/* number of current attaches */
+    shmatt_t shm_nattch;		/* number of current attaches */
     unsigned long int __unused1;
     unsigned long int __unused2;
   };

sysdeps/unix/sysv/linux/kernel-features.h

@@ -84,6 +84,11 @@
 # define __ASSUME_MSG_NOSIGNAL		1
 #endif
 
+/* The sendfile syscall was introduced in 2.2.0.  */
+#if __LINUX_KERNEL_VERSION >= 131584
+# define __ASSUME_SENDFILE		1
+#endif
+
 /* On x86 another `getrlimit' syscall was added in 2.3.25.  */
 #if __LINUX_KERNEL_VERSION >= 131865 && defined __i386__
 # define __ASSUME_NEW_GETRLIMIT_SYSCALL	1