From cc4e69dee4a080f6eae3f410daec2593f4fa6f00 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Mon, 7 Nov 2005 00:59:49 -0800 Subject: [PATCH] VFS: pass file pointer to filesystem from ftruncate() This patch extends the iattr structure with a file pointer memeber, and adds an ATTR_FILE validity flag for this member. This is set if do_truncate() is invoked from ftruncate() or from do_coredump(). The change is source and binary compatible. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/exec.c | 2 +- fs/namei.c | 2 +- fs/open.c | 10 +++++++--- 3 files changed, 9 insertions(+), 5 deletions(-) (limited to 'fs') diff --git a/fs/exec.c b/fs/exec.c index ce76b33..cd6c574 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1511,7 +1511,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs) goto close_fail; if (!file->f_op->write) goto close_fail; - if (do_truncate(file->f_dentry, 0) != 0) + if (do_truncate(file->f_dentry, 0, file) != 0) goto close_fail; retval = binfmt->core_dump(signr, regs, file); diff --git a/fs/namei.c b/fs/namei.c index c5769c4..b3f8a19 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1459,7 +1459,7 @@ int may_open(struct nameidata *nd, int acc_mode, int flag) if (!error) { DQUOT_INIT(inode); - error = do_truncate(dentry, 0); + error = do_truncate(dentry, 0, NULL); } put_write_access(inode); if (error) diff --git a/fs/open.c b/fs/open.c index 2835f09..6e81367 100644 --- a/fs/open.c +++ b/fs/open.c @@ -194,7 +194,7 @@ out: return error; } -int do_truncate(struct dentry *dentry, loff_t length) +int do_truncate(struct dentry *dentry, loff_t length, struct file *filp) { int err; struct iattr newattrs; @@ -205,6 +205,10 @@ int do_truncate(struct dentry *dentry, loff_t length) newattrs.ia_size = length; newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; + if (filp) { + newattrs.ia_file = filp; + newattrs.ia_valid |= ATTR_FILE; + } down(&dentry->d_inode->i_sem); err = notify_change(dentry, &newattrs); @@ -262,7 +266,7 @@ static inline long do_sys_truncate(const char __user * path, loff_t length) error = locks_verify_truncate(inode, NULL, length); if (!error) { DQUOT_INIT(inode); - error = do_truncate(nd.dentry, length); + error = do_truncate(nd.dentry, length, NULL); } put_write_access(inode); @@ -314,7 +318,7 @@ static inline long do_sys_ftruncate(unsigned int fd, loff_t length, int small) error = locks_verify_truncate(inode, file, length); if (!error) - error = do_truncate(dentry, length); + error = do_truncate(dentry, length, file); out_putf: fput(file); out: -- cgit v1.1