X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Ffcntl.c;h=3d9a948667445f7ee197dbbe17ddbeccd1bb2bd8;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=abad0aa00d13d68984506683bbade3abec0169b6;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/fs/fcntl.c b/fs/fcntl.c
index abad0aa00..3d9a94866 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/security.h>
 #include <linux/ptrace.h>
+#include <linux/vs_limit.h>
 
 #include <asm/poll.h>
 #include <asm/siginfo.h>
@@ -107,6 +108,8 @@ repeat:
 	error = -EMFILE;
 	if (newfd >= current->rlim[RLIMIT_NOFILE].rlim_cur)
 		goto out;
+	if (!vx_files_avail(1))
+		goto out;
 
 	error = expand_files(files, newfd);
 	if (error < 0)
@@ -139,6 +142,7 @@ static int dupfd(struct file *file, unsigned int start)
 		FD_SET(fd, files->open_fds);
 		FD_CLR(fd, files->close_on_exec);
 		spin_unlock(&files->file_lock);
+		// vx_openfd_inc(fd);
 		fd_install(fd, file);
 	} else {
 		spin_unlock(&files->file_lock);
@@ -186,6 +190,7 @@ asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd)
 	FD_SET(newfd, files->open_fds);
 	FD_CLR(newfd, files->close_on_exec);
 	spin_unlock(&files->file_lock);
+	// vx_openfd_inc(newfd);
 
 	if (tofree)
 		filp_close(tofree, files);
@@ -212,7 +217,7 @@ asmlinkage long sys_dup(unsigned int fildes)
 	return ret;
 }
 
-#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | FASYNC | O_DIRECT)
+#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | FASYNC | O_DIRECT | O_NOATIME)
 
 static int setfl(int fd, struct file * filp, unsigned long arg)
 {
@@ -223,6 +228,11 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
 	if (!(arg & O_APPEND) && IS_APPEND(inode))
 		return -EPERM;
 
+	/* O_NOATIME can only be set by the owner or superuser */
+	if ((arg & O_NOATIME) && !(filp->f_flags & O_NOATIME))
+		if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
+			return -EPERM;
+
 	/* required for strict SunOS emulation */
 	if (O_NONBLOCK != O_NDELAY)
 	       if (arg & O_NDELAY)
@@ -234,6 +244,11 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
 				return -EINVAL;
 	}
 
+	if (filp->f_op && filp->f_op->check_flags)
+		error = filp->f_op->check_flags(arg);
+	if (error)
+		return error;
+
 	lock_kernel();
 	if ((arg ^ filp->f_flags) & FASYNC) {
 		if (filp->f_op && filp->f_op->fasync) {
@@ -282,8 +297,8 @@ void f_delown(struct file *filp)
 
 EXPORT_SYMBOL(f_delown);
 
-long generic_file_fcntl(int fd, unsigned int cmd,
-			unsigned long arg, struct file *filp)
+static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
+		struct file *filp)
 {
 	long err = -EINVAL;
 
@@ -351,15 +366,6 @@ long generic_file_fcntl(int fd, unsigned int cmd,
 	}
 	return err;
 }
-EXPORT_SYMBOL(generic_file_fcntl);
-
-static long do_fcntl(int fd, unsigned int cmd,
-			unsigned long arg, struct file *filp)
-{
-	if (filp->f_op && filp->f_op->fcntl)
-		return filp->f_op->fcntl(fd, cmd, arg, filp);
-	return generic_file_fcntl(fd, cmd, arg, filp);
-}
 
 asmlinkage long sys_fcntl(int fd, unsigned int cmd, unsigned long arg)
 {	
@@ -627,15 +633,12 @@ void kill_fasync(struct fasync_struct **fp, int sig, int band)
 		read_unlock(&fasync_lock);
 	}
 }
-
 EXPORT_SYMBOL(kill_fasync);
 
 static int __init fasync_init(void)
 {
 	fasync_cache = kmem_cache_create("fasync_cache",
-		sizeof(struct fasync_struct), 0, 0, NULL, NULL);
-	if (!fasync_cache)
-		panic("cannot create fasync slab cache");
+		sizeof(struct fasync_struct), 0, SLAB_PANIC, NULL, NULL);
 	return 0;
 }