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author | Al Viro <viro@zeniv.linux.org.uk> | 2012-08-27 19:55:01 -0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-26 21:16:32 -0400 |
commit | a5b470ba06aa3f96999ede5feba178df6bdb134a (patch) | |
tree | bf6d8f14a5524313687f605f7db9f047a2f2009d /include/linux | |
parent | 2a117354b7bdfe13750a64307755e75436fb157a (diff) | |
download | linux-stable-a5b470ba06aa3f96999ede5feba178df6bdb134a.tar.gz linux-stable-a5b470ba06aa3f96999ede5feba178df6bdb134a.tar.bz2 linux-stable-a5b470ba06aa3f96999ede5feba178df6bdb134a.zip |
new helpers: fdget()/fdput()
Signed-off-bs: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/file.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/file.h b/include/linux/file.h index 6eee54aea279..c38bfbff4647 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -26,8 +26,34 @@ static inline void fput_light(struct file *file, int fput_needed) fput(file); } +struct fd { + struct file *file; + int need_put; +}; + +static inline void fdput(struct fd fd) +{ + if (fd.need_put) + fput(fd.file); +} + extern struct file *fget(unsigned int fd); extern struct file *fget_light(unsigned int fd, int *fput_needed); + +static inline struct fd fdget(unsigned int fd) +{ + int b; + struct file *f = fget_light(fd, &b); + return (struct fd){f,b}; +} + +static inline struct fd fdget_raw(unsigned int fd) +{ + int b; + struct file *f = fget_raw_light(fd, &b); + return (struct fd){f,b}; +} + extern struct file *fget_raw(unsigned int fd); extern struct file *fget_raw_light(unsigned int fd, int *fput_needed); extern int f_dupfd(unsigned int from, struct file *file, unsigned flags); |