本文整理汇总了C++中put_filp函数的典型用法代码示例。如果您正苦于以下问题:C++ put_filp函数的具体用法?C++ put_filp怎么用?C++ put_filp使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了put_filp函数的16个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: recv_fds
static int recv_fds(int minor, struct ancillary *data,
struct msg_control *msg_ctrl)
{
int rc, i, j;
struct msghdr msghdr;
struct cmsghdr *cmsg;
endpoint_t to_ep;
#if DEBUG == 1
static int call_count = 0;
printf("(uds) [%d] recv_fds() call_count=%d\n", minor,
++call_count);
#endif
msghdr.msg_control = msg_ctrl->msg_control;
msghdr.msg_controllen = msg_ctrl->msg_controllen;
cmsg = CMSG_FIRSTHDR(&msghdr);
cmsg->cmsg_len = CMSG_LEN(sizeof(int) * data->nfiledes);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
to_ep = uds_fd_table[minor].owner;
/* copy to the target endpoint */
for (i = 0; i < data->nfiledes; i++) {
rc = copy_filp(to_ep, data->filps[i]);
if (rc < 0) {
/* revert set_filp() calls */
for (j = 0; j < data->nfiledes; j++) {
put_filp(data->filps[j]);
}
/* revert copy_filp() calls */
for (j = i; j >= 0; j--) {
cancel_fd(to_ep, data->fds[j]);
}
return rc;
}
data->fds[i] = rc; /* data->fds[i] now has the new FD */
}
for (i = 0; i < data->nfiledes; i++) {
put_filp(data->filps[i]);
#if DEBUG == 1
printf("(uds) recv_fds() => %d\n", data->fds[i]);
#endif
((int *)CMSG_DATA(cmsg))[i] = data->fds[i];
data->fds[i] = -1;
data->filps[i] = NULL;
}
data->nfiledes = 0;
return OK;
}
开发者ID:anuragpeshne,项目名称:minix,代码行数:55,代码来源:uds.c
示例2: send_fds
static int send_fds(int minor, struct ancillary *data)
{
int rc, i, j;
#if DEBUG == 1
static int call_count = 0;
printf("(uds) [%d] send_fds() call_count=%d\n", minor, ++call_count);
#endif
/* verify the file descriptors and get their filps. */
for (i = 0; i < data->nfiledes; i++) {
data->filps[i] = verify_fd(uds_fd_table[minor].owner,
data->fds[i]);
if (data->filps[i] == NULL) {
return EINVAL;
}
}
/* set them as in-flight */
for (i = 0; i < data->nfiledes; i++) {
rc = set_filp(data->filps[i]);
if (rc != OK) {
/* revert set_filp() calls */
for (j = i; j >= 0; j--) {
put_filp(data->filps[j]);
}
return rc;
}
}
return OK;
}
开发者ID:anuragpeshne,项目名称:minix,代码行数:33,代码来源:uds.c
示例3: validate_creds
struct file *dentry_open(const struct path *path, int flags,
const struct cred *cred)
{
int error;
struct file *f;
validate_creds(cred);
BUG_ON(!path->mnt);
f = get_empty_filp();
if (!IS_ERR(f)) {
f->f_flags = flags;
f->f_path = *path;
error = do_dentry_open(f, NULL, cred);
if (!error) {
error = open_check_o_direct(f);
if (error) {
fput(f);
f = ERR_PTR(error);
}
} else {
put_filp(f);
f = ERR_PTR(error);
}
}
return f;
}
开发者ID:Clumsy-Kernel-Development,项目名称:M9_Kernel,代码行数:30,代码来源:open.c
示例4: get_empty_filp
static struct file *vperfctr_get_filp(void)
{
struct file *filp;
struct inode *inode;
struct dentry *dentry;
filp = get_empty_filp();
if (!filp)
goto out;
inode = vperfctr_get_inode();
if (!inode)
goto out_filp;
dentry = vperfctr_d_alloc_root(inode);
if (!dentry)
goto out_inode;
filp->f_vfsmnt = mntget(vperfctr_mnt);
filp->f_dentry = dentry;
filp->f_mapping = dentry->d_inode->i_mapping;
filp->f_pos = 0;
filp->f_flags = 0;
filp->f_op = &vperfctr_file_ops; /* fops_get() if MODULE */
filp->f_mode = FMODE_READ;
filp->f_version = 0;
return filp;
out_inode:
iput(inode);
out_filp:
put_filp(filp); /* doesn't run ->release() like fput() does */
out:
return NULL;
}
开发者ID:akennedy-adtran,项目名称:linux_mmc_2.6.32.9,代码行数:35,代码来源:virtual.c
示例5: validate_creds
struct file *dentry_open(const struct path *path, int flags,
const struct cred *cred)
{
int error;
struct file *f;
validate_creds(cred);
/* We must always pass in a valid mount pointer. */
BUG_ON(!path->mnt);
f = get_empty_filp();
if (!IS_ERR(f)) {
f->f_flags = flags;
f->f_path = *path;
error = do_dentry_open(f, NULL, cred);
if (!error) {
/* from now on we need fput() to dispose of f */
error = open_check_o_direct(f);
if (error) {
fput(f);
f = ERR_PTR(error);
}
} else {
put_filp(f);
f = ERR_PTR(error);
}
}
return f;
}
开发者ID:wpwrak,项目名称:ben-wpan-linux,代码行数:30,代码来源:open.c
示例6: validate_creds
struct file *dentry_open(const struct path *path, int flags,
const struct cred *cred)
{
int error;
struct file *f;
validate_creds(cred);
/* We must always pass in a valid mount pointer. */
BUG_ON(!path->mnt);
error = -ENFILE;
f = get_empty_filp();
if (f == NULL)
return ERR_PTR(error);
f->f_flags = flags;
error = vfs_open(path, f, cred);
if (!error) {
error = open_check_o_direct(f);
if (error) {
fput(f);
f = ERR_PTR(error);
}
} else {
put_filp(f);
f = ERR_PTR(error);
}
return f;
}
开发者ID:sonoble,项目名称:linux-3.8.13,代码行数:30,代码来源:open.c
示例7: clear_fds
int clear_fds(int minor, struct ancillary *data)
{
/* This function calls put_filp() for all of the FDs in data.
* This is used when a Unix Domain Socket is closed and there
* exists references to file descriptors that haven't been received
* with recvmsg().
*/
int i;
#if DEBUG == 1
static int call_count = 0;
printf("(uds) [%d] recv_fds() call_count=%d\n", minor,
++call_count);
#endif
for (i = 0; i < data->nfiledes; i++) {
put_filp(data->filps[i]);
#if DEBUG == 1
printf("(uds) clear_fds() => %d\n", data->fds[i]);
#endif
data->fds[i] = -1;
data->filps[i] = NULL;
}
data->nfiledes = 0;
return OK;
}
开发者ID:anuragpeshne,项目名称:minix,代码行数:28,代码来源:uds.c
示例8: return
/*
* shmem_file_setup - get an unlinked file living in tmpfs
*
* @name: name for dentry (to be seen in /proc/<pid>/maps
* @size: size to be set for the file
*
*/
struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags)
{
int error;
struct file *file;
struct inode *inode;
struct dentry *dentry, *root;
struct qstr this;
if (IS_ERR(shm_mnt))
return (void *)shm_mnt;
error = -ENOMEM;
this.name = name;
this.len = strlen(name);
this.hash = 0; /* will go */
root = shm_mnt->mnt_root;
dentry = d_alloc(root, &this);
if (!dentry)
goto put_memory;
error = -ENFILE;
file = get_empty_filp();
if (!file)
goto put_dentry;
error = -ENOSPC;
inode = ramfs_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0);
if (!inode)
goto close_file;
d_instantiate(dentry, inode);
inode->i_nlink = 0; /* It is unlinked */
file->f_path.mnt = mntget(shm_mnt);
file->f_path.dentry = dentry;
file->f_mapping = inode->i_mapping;
file->f_op = &ramfs_file_operations;
file->f_mode = FMODE_WRITE | FMODE_READ;
/* notify everyone as to the change of file size */
error = do_truncate(dentry, size, 0, file);
if (error < 0)
goto close_file;
return file;
close_file:
put_filp(file);
put_dentry:
dput(dentry);
put_memory:
return ERR_PTR(error);
}
开发者ID:3sOx,项目名称:asuswrt-merlin,代码行数:60,代码来源:tiny-shmem.c
示例9: get_empty_filp
struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
{
struct file * f;
struct inode *inode;
int error;
error = -ENFILE;
f = get_empty_filp();
if (!f)
goto cleanup_dentry;
f->f_flags = flags;
f->f_mode = (flags+1) & O_ACCMODE;
inode = dentry->d_inode;
if (f->f_mode & FMODE_WRITE) {
error = get_write_access(inode);
if (error)
goto cleanup_file;
}
f->f_dentry = dentry;
f->f_vfsmnt = mnt;
f->f_pos = 0;
f->f_reada = 0;
f->f_op = fops_get(inode->i_fop);
if (inode->i_sb)
file_move(f, &inode->i_sb->s_files);
if (f->f_op && f->f_op->open) {
error = f->f_op->open(inode,f);
if (error)
goto cleanup_all;
}
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
return f;
cleanup_all:
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITE)
put_write_access(inode);
f->f_dentry = NULL;
f->f_vfsmnt = NULL;
cleanup_file:
put_filp(f);
cleanup_dentry:
dput(dentry);
mntput(mnt);
return ERR_PTR(error);
}
开发者ID:EmbolismSoil,项目名称:Linux-2.4.0-,代码行数:48,代码来源:open.c
示例10: int
static struct file *__dentry_open(struct path *path, struct file *f,
int (*open)(struct inode *, struct file *),
const struct cred *cred)
{
struct file *res = do_dentry_open(path, f, open, cred);
if (!IS_ERR(res)) {
int error = open_check_o_direct(f);
if (error) {
fput(res);
res = ERR_PTR(error);
}
} else {
put_filp(f);
}
return res;
}
开发者ID:aywq2008,项目名称:omniplay,代码行数:16,代码来源:open.c
示例11: get_empty_filp
struct file *filp_clone_open(struct file *oldfile)
{
struct file *file;
int retval;
file = get_empty_filp();
if (IS_ERR(file))
return file;
file->f_flags = oldfile->f_flags;
retval = vfs_open(&oldfile->f_path, file, oldfile->f_cred);
if (retval) {
put_filp(file);
return ERR_PTR(retval);
}
return file;
}
开发者ID:krzk,项目名称:linux,代码行数:18,代码来源:open.c
示例12: int
static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
struct file *f,
int (*open)(struct inode *, struct file *),
const struct cred *cred)
{
static const struct file_operations empty_fops = {};
struct inode *inode;
int error;
f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |
FMODE_PREAD | FMODE_PWRITE;
if (unlikely(f->f_flags & O_PATH))
f->f_mode = FMODE_PATH;
inode = dentry->d_inode;
if (f->f_mode & FMODE_WRITE) {
error = __get_file_write_access(inode, mnt);
if (error)
goto cleanup_file;
if (!special_file(inode->i_mode))
file_take_write(f);
}
f->f_mapping = inode->i_mapping;
f->f_path.dentry = dentry;
f->f_path.mnt = mnt;
f->f_pos = 0;
file_sb_list_add(f, inode->i_sb);
if (unlikely(f->f_mode & FMODE_PATH)) {
f->f_op = &empty_fops;
return f;
}
f->f_op = fops_get(inode->i_fop);
error = security_dentry_open(f, cred);
if (error)
goto cleanup_all;
error = break_lease(inode, f->f_flags);
if (error)
goto cleanup_all;
if (!open && f->f_op)
open = f->f_op->open;
if (open) {
error = open(inode, f);
if (error)
goto cleanup_all;
}
if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_inc(inode);
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);
/* NB: we're sure to have correct a_ops only after f_op->open */
if (f->f_flags & O_DIRECT) {
if (!f->f_mapping->a_ops ||
((!f->f_mapping->a_ops->direct_IO) &&
(!f->f_mapping->a_ops->get_xip_mem))) {
fput(f);
f = ERR_PTR(-EINVAL);
}
}
return f;
cleanup_all:
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITE) {
put_write_access(inode);
if (!special_file(inode->i_mode)) {
/*
* We don't consider this a real
* mnt_want/drop_write() pair
* because it all happenend right
* here, so just reset the state.
*/
file_reset_write(f);
mnt_drop_write(mnt);
}
}
file_sb_list_del(f);
f->f_path.dentry = NULL;
f->f_path.mnt = NULL;
cleanup_file:
put_filp(f);
dput(dentry);
mntput(mnt);
return ERR_PTR(error);
}
开发者ID:boa19861105,项目名称:Blackout-Monarudo,代码行数:95,代码来源:open.c
示例13: do_pipe
int do_pipe(int *fd)
{
struct inode * inode;
struct file *f1, *f2;
int error;
int i,j;
error = -ENFILE;
f1 = get_empty_filp();
if (!f1)
goto no_files;
f2 = get_empty_filp();
if (!f2)
goto close_f1;
inode = get_pipe_inode();
if (!inode)
goto close_f12;
error = get_unused_fd();
if (error < 0)
goto close_f12_inode;
i = error;
error = get_unused_fd();
if (error < 0)
goto close_f12_inode_i;
j = error;
error = -ENOMEM;
f1->f_dentry = f2->f_dentry = dget(d_alloc_root(inode, NULL));
if (!f1->f_dentry)
goto close_f12_inode_i_j;
/* read file */
f1->f_pos = f2->f_pos = 0;
f1->f_flags = O_RDONLY;
f1->f_op = &read_pipe_fops;
f1->f_mode = 1;
/* write file */
f2->f_flags = O_WRONLY;
f2->f_op = &write_pipe_fops;
f2->f_mode = 2;
fd_install(i, f1);
fd_install(j, f2);
fd[0] = i;
fd[1] = j;
return 0;
close_f12_inode_i_j:
put_unused_fd(j);
close_f12_inode_i:
put_unused_fd(i);
close_f12_inode:
free_page((unsigned long) PIPE_BASE(*inode));
iput(inode);
close_f12:
put_filp(f2);
close_f1:
put_filp(f1);
no_files:
return error;
}
开发者ID:chinnyannieb,项目名称:empeg-hijack,代码行数:66,代码来源:pipe.c
示例14: int
static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
int flags, struct file *f,
int (*open)(struct inode *, struct file *))
{
struct inode *inode;
int error;
f->f_flags = flags;
f->f_mode = ((flags+1) & O_ACCMODE) | FMODE_LSEEK |
FMODE_PREAD | FMODE_PWRITE;
inode = dentry->d_inode;
if (f->f_mode & FMODE_WRITE) {
error = __get_file_write_access(inode, mnt);
if (error)
goto cleanup_file;
if (!special_file(inode->i_mode))
file_take_write(f);
}
f->f_mapping = inode->i_mapping;
f->f_path.dentry = dentry;
f->f_path.mnt = mnt;
f->f_pos = 0;
f->f_op = fops_get(inode->i_fop);
file_move(f, &inode->i_sb->s_files);
error = security_dentry_open(f);
if (error)
goto cleanup_all;
if (!open && f->f_op)
open = f->f_op->open;
if (open) {
error = open(inode, f);
if (error)
goto cleanup_all;
}
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);
/* NB: we're sure to have correct a_ops only after f_op->open */
if (f->f_flags & O_DIRECT) {
if (!f->f_mapping->a_ops ||
((!f->f_mapping->a_ops->direct_IO) &&
(!f->f_mapping->a_ops->get_xip_mem))) {
fput(f);
f = ERR_PTR(-EINVAL);
}
}
return f;
cleanup_all:
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITE) {
put_write_access(inode);
if (!special_file(inode->i_mode)) {
/*
* We don't consider this a real
* mnt_want/drop_write() pair
* because it all happenend right
* here, so just reset the state.
*/
file_reset_write(f);
mnt_drop_write(mnt);
}
}
file_kill(f);
f->f_path.dentry = NULL;
f->f_path.mnt = NULL;
cleanup_file:
put_filp(f);
dput(dentry);
mntput(mnt);
return ERR_PTR(error);
}
开发者ID:mpalmer,项目名称:linux-2.6,代码行数:78,代码来源:open.c
示例15: do_pipe
int do_pipe(int *fd)
{
struct qstr this;
char name[32];
struct dentry *dentry;
struct inode * inode;
struct file *f1, *f2;
int error;
int i,j;
error = -ENFILE;
f1 = get_empty_filp();
if (!f1)
goto no_files;
f2 = get_empty_filp();
if (!f2)
goto close_f1;
inode = get_pipe_inode();
if (!inode)
goto close_f12;
error = get_unused_fd();
if (error < 0)
goto close_f12_inode;
i = error;
error = get_unused_fd();
if (error < 0)
goto close_f12_inode_i;
j = error;
error = -ENOMEM;
sprintf(name, "[%lu]", inode->i_ino);
this.name = name;
this.len = strlen(name);
this.hash = inode->i_ino; /* will go */
dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &this);
if (!dentry)
goto close_f12_inode_i_j;
dentry->d_op = &pipefs_dentry_operations;
d_add(dentry, inode);
f1->f_vfsmnt = f2->f_vfsmnt = mntget(mntget(pipe_mnt));
f1->f_dentry = f2->f_dentry = dget(dentry);
/* read file */
f1->f_pos = f2->f_pos = 0;
f1->f_flags = O_RDONLY;
f1->f_op = &read_pipe_fops;
f1->f_mode = 1;
f1->f_version = 0;
/* write file */
f2->f_flags = O_WRONLY;
f2->f_op = &write_pipe_fops;
f2->f_mode = 2;
f2->f_version = 0;
fd_install(i, f1);
fd_install(j, f2);
fd[0] = i;
fd[1] = j;
return 0;
close_f12_inode_i_j:
put_unused_fd(j);
close_f12_inode_i:
put_unused_fd(i);
close_f12_inode:
free_page((unsigned long) PIPE_BASE(*inode));
kfree(inode->i_pipe);
inode->i_pipe = NULL;
iput(inode);
close_f12:
put_filp(f2);
close_f1:
put_filp(f1);
no_files:
return error;
}
开发者ID:SnkBitten,项目名称:amithlon4,代码行数:81,代码来源:pipe.c
示例16: LIST_HEAD
struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
{
struct file * f;
struct inode *inode;
static LIST_HEAD(kill_list);
int error;
error = -ENFILE;
f = get_empty_filp();
if (!f)
goto cleanup_dentry;
f->f_flags = flags;
f->f_mode = (flags+1) & O_ACCMODE;
inode = dentry->d_inode;
if (f->f_mode & FMODE_WRITE) {
error = get_write_access(inode);
if (error)
goto cleanup_file;
}
f->f_dentry = dentry;
f->f_vfsmnt = mnt;
f->f_pos = 0;
f->f_reada = 0;
f->f_op = fops_get(inode->i_fop);
file_move(f, &inode->i_sb->s_files);
/* preallocate kiobuf for O_DIRECT */
f->f_iobuf = NULL;
f->f_iobuf_lock = 0;
if (f->f_flags & O_DIRECT) {
error = alloc_kiovec(1, &f->f_iobuf);
if (error)
goto cleanup_all;
}
if (f->f_op && f->f_op->open) {
error = f->f_op->open(inode,f);
if (error)
goto cleanup_all;
}
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
return f;
cleanup_all:
if (f->f_iobuf)
free_kiovec(1, &f->f_iobuf);
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITE)
put_write_access(inode);
file_move(f, &kill_list); /* out of the way.. */
f->f_dentry = NULL;
f->f_vfsmnt = NULL;
cleanup_file:
put_filp(f);
cleanup_dentry:
dput(dentry);
mntput(mnt);
return ERR_PTR(error);
}
开发者ID:niubl,项目名称:camera_project,代码行数:61,代码来源:open.c
注:本文中的put_filp函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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