mirror of git://gcc.gnu.org/git/gcc.git
60 lines
1.9 KiB
D
60 lines
1.9 KiB
D
module core.sys.linux.fcntl;
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public import core.sys.posix.fcntl;
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version (linux):
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extern(C):
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nothrow:
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// From linux/falloc.h
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/// fallocate(2) params
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enum {
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/// Allocates and initializes to zero the disk space
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/// within the specified range, but the file size
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/// will not be modified.
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FALLOC_FL_KEEP_SIZE = 0x01,
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/// Deallocates space (i.e. creates a hole)
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FALLOC_FL_PUNCH_HOLE = 0x02,
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/// Newly allocated blocks will be marked as initialized.
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FALLOC_FL_NO_HIDE_STALE = 0x04,
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/// Removes a byte range from a file, without leaving a hole
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FALLOC_FL_COLLAPSE_RANGE = 0x08,
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/// Zeroes space in the specified byte range
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FALLOC_FL_ZERO_RANGE = 0x10,
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/// Increases the file space by inserting a hole
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/// without overwriting any existing data
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FALLOC_FL_INSERT_RANGE = 0x20,
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/// Used to unshare shared blocks within
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/// the file size without overwriting any existing data
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FALLOC_FL_UNSHARE_RANGE = 0x40
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}
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// From asm-generic/fcntl.h
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/**
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Open File Description locks
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Usually record locks held by a process are released on *any* close and are
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not inherited across a fork().
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These cmd values will set locks that conflict with process-associated
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record locks, but are "owned" by the open file description, not the
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process. This means that they are inherited across fork() like BSD (flock)
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locks, and they are only released automatically when the last reference to
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the the open file against which they were acquired is put.
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*/
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enum
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{
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/// Queries the system if the lock could be placed
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F_OFD_GETLK = 36,
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/// Acquires or releases an open file description lock
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F_OFD_SETLK = 37,
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/// Same as F_OFD_SETLK, but waits if a conflicting lock is held on the file
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F_OFD_SETLKW = 38
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}
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// Linux-specific fallocate
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// (http://man7.org/linux/man-pages/man2/fallocate.2.html)
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int fallocate(int fd, int mode, off_t offset, off_t len);
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