diff options
Diffstat (limited to 'fs/proc')
-rw-r--r-- | fs/proc/base.c | 16 | ||||
-rw-r--r-- | fs/proc/generic.c | 18 | ||||
-rw-r--r-- | fs/proc/inode.c | 6 | ||||
-rw-r--r-- | fs/proc/proc_sysctl.c | 15 |
4 files changed, 40 insertions, 15 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 69254a3..c806dfb 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -559,9 +559,19 @@ static int proc_setattr(struct dentry *dentry, struct iattr *attr) return -EPERM; error = inode_change_ok(inode, attr); - if (!error) - error = inode_setattr(inode, attr); - return error; + if (error) + return error; + + if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size != i_size_read(inode)) { + error = vmtruncate(inode, attr->ia_size); + if (error) + return error; + } + + setattr_copy(inode, attr); + mark_inode_dirty(inode); + return 0; } static const struct inode_operations proc_def_inode_operations = { diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 2791907..dd29f03 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -12,6 +12,7 @@ #include <linux/time.h> #include <linux/proc_fs.h> #include <linux/stat.h> +#include <linux/mm.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/mount.h> @@ -258,17 +259,22 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr) error = inode_change_ok(inode, iattr); if (error) - goto out; + return error; - error = inode_setattr(inode, iattr); - if (error) - goto out; + if ((iattr->ia_valid & ATTR_SIZE) && + iattr->ia_size != i_size_read(inode)) { + error = vmtruncate(inode, iattr->ia_size); + if (error) + return error; + } + + setattr_copy(inode, iattr); + mark_inode_dirty(inode); de->uid = inode->i_uid; de->gid = inode->i_gid; de->mode = inode->i_mode; -out: - return error; + return 0; } static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry, diff --git a/fs/proc/inode.c b/fs/proc/inode.c index aea8502..23561cd 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -25,11 +25,12 @@ #include "internal.h" -static void proc_delete_inode(struct inode *inode) +static void proc_evict_inode(struct inode *inode) { struct proc_dir_entry *de; truncate_inode_pages(&inode->i_data, 0); + end_writeback(inode); /* Stop tracking associated processes */ put_pid(PROC_I(inode)->pid); @@ -40,7 +41,6 @@ static void proc_delete_inode(struct inode *inode) pde_put(de); if (PROC_I(inode)->sysctl) sysctl_head_put(PROC_I(inode)->sysctl); - clear_inode(inode); } struct vfsmount *proc_mnt; @@ -91,7 +91,7 @@ static const struct super_operations proc_sops = { .alloc_inode = proc_alloc_inode, .destroy_inode = proc_destroy_inode, .drop_inode = generic_delete_inode, - .delete_inode = proc_delete_inode, + .evict_inode = proc_evict_inode, .statfs = simple_statfs, }; diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 6ff9981..5be436e 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -329,10 +329,19 @@ static int proc_sys_setattr(struct dentry *dentry, struct iattr *attr) return -EPERM; error = inode_change_ok(inode, attr); - if (!error) - error = inode_setattr(inode, attr); + if (error) + return error; + + if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size != i_size_read(inode)) { + error = vmtruncate(inode, attr->ia_size); + if (error) + return error; + } - return error; + setattr_copy(inode, attr); + mark_inode_dirty(inode); + return 0; } static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) |