tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
new helpers: fdget()/fdput()
Signed-off-bs: Al Viro <viro@zeniv.linux.org.uk>
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include/linux/file.h
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include/linux/file.h
···
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fput(file);
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}
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struct fd {
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struct file *file;
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int need_put;
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};
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static inline void fdput(struct fd fd)
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{
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if (fd.need_put)
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fput(fd.file);
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}
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extern struct file *fget(unsigned int fd);
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extern struct file *fget_light(unsigned int fd, int *fput_needed);
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static inline struct fd fdget(unsigned int fd)
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{
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int b;
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struct file *f = fget_light(fd, &b);
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return (struct fd){f,b};
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}
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static inline struct fd fdget_raw(unsigned int fd)
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{
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int b;
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struct file *f = fget_raw_light(fd, &b);
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return (struct fd){f,b};
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}
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extern struct file *fget_raw(unsigned int fd);
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extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
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extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);