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182 lines
5.6 KiB
C
182 lines
5.6 KiB
C
/*
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* This header is used if <sys/inotify.h> cannot be found.
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*
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* Inode based directory notification for Linux
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*
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* Copyright (C) 2005 John McCutchan
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*/
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#ifndef _LINUX_INOTIFY_H
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#define _LINUX_INOTIFY_H
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#include <stdint.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include <asm/unistd.h>
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/*
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* struct inotify_event - structure read from the inotify device for each event
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*
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* When you are watching a directory, you will receive the filename for events
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* such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
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*/
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struct inotify_event {
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int wd; /* watch descriptor */
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uint32_t mask; /* watch mask */
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uint32_t cookie; /* cookie to synchronize two events */
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uint32_t len; /* length (including nulls) of name */
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char name __flexarr; /* stub for possible name */
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};
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/* the following are legal, implemented events that user-space can watch for */
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#define IN_ACCESS 0x00000001 /* File was accessed */
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#define IN_MODIFY 0x00000002 /* File was modified */
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#define IN_ATTRIB 0x00000004 /* Metadata changed */
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#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
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#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
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#define IN_OPEN 0x00000020 /* File was opened */
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#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
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#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
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#define IN_CREATE 0x00000100 /* Subfile was created */
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#define IN_DELETE 0x00000200 /* Subfile was deleted */
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#define IN_DELETE_SELF 0x00000400 /* Self was deleted */
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#define IN_MOVE_SELF 0x00000800 /* Self was moved */
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/* the following are legal events. they are sent as needed to any watch */
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#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
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#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
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#define IN_IGNORED 0x00008000 /* File was ignored */
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/* helper events */
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#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
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#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
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/* special flags */
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#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
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#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
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#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
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#define IN_ISDIR 0x40000000 /* event occurred against dir */
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#define IN_ONESHOT 0x80000000 /* only send event once */
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/*
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* All of the events - we build the list by hand so that we can add flags in
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* the future and not break backward compatibility. Apps will get only the
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* events that they originally wanted. Be sure to add new events here!
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*/
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#define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
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IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
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IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
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IN_MOVE_SELF)
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#if 0
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#if defined (__alpha__)
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# define __NR_inotify_init 444
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# define __NR_inotify_add_watch 445
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# define __NR_inotify_rm_watch 446
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#elif defined (__arm__)
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# define __NR_inotify_init (__NR_SYSCALL_BASE+316)
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# define __NR_inotify_add_watch (__NR_SYSCALL_BASE+317)
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# define __NR_inotify_rm_watch (__NR_SYSCALL_BASE+318)
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#elif defined (__frv__)
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# define __NR_inotify_init 291
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# define __NR_inotify_add_watch 292
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# define __NR_inotify_rm_watch 293
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#elif defined(__i386__)
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# define __NR_inotify_init 291
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# define __NR_inotify_add_watch 292
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# define __NR_inotify_rm_watch 293
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#elif defined (__ia64__)
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# define __NR_inotify_init 1277
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# define __NR_inotify_add_watch 1278
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# define __NR_inotify_rm_watch 1279
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#elif defined (__mips__)
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define __NR_inotify_init (__NR_Linux + 284)
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# define __NR_inotify_add_watch (__NR_Linux + 285)
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# define __NR_inotify_rm_watch (__NR_Linux + 286)
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# endif
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# if _MIPS_SIM == _MIPS_SIM_ABI64
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# define __NR_inotify_init (__NR_Linux + 243)
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# define __NR_inotify_add_watch (__NR_Linux + 243)
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# define __NR_inotify_rm_watch (__NR_Linux + 243)
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# endif
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# if _MIPS_SIM == _MIPS_SIM_NABI32
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# define __NR_inotify_init (__NR_Linux + 247)
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# define __NR_inotify_add_watch (__NR_Linux + 248)
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# define __NR_inotify_rm_watch (__NR_Linux + 249)
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# endif
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#elif defined(__parisc__)
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# define __NR_inotify_init (__NR_Linux + 269)
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# define __NR_inotify_add_watch (__NR_Linux + 270)
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# define __NR_inotify_rm_watch (__NR_Linux + 271)
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#elif defined(__powerpc__) || defined(__powerpc64__)
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# define __NR_inotify_init 275
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# define __NR_inotify_add_watch 276
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# define __NR_inotify_rm_watch 277
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#elif defined (__s390__)
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# define __NR_inotify_init 284
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# define __NR_inotify_add_watch 285
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# define __NR_inotify_rm_watch 286
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#elif defined (__sh__)
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# define __NR_inotify_init 290
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# define __NR_inotify_add_watch 291
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# define __NR_inotify_rm_watch 292
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#elif defined (__sh64__)
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# define __NR_inotify_init 318
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# define __NR_inotify_add_watch 319
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# define __NR_inotify_rm_watch 320
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#elif defined (__sparc__) || defined (__sparc64__)
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# define __NR_inotify_init 151
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# define __NR_inotify_add_watch 152
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# define __NR_inotify_rm_watch 156
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#elif defined(__x86_64__)
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# define __NR_inotify_init 253
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# define __NR_inotify_add_watch 254
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# define __NR_inotify_rm_watch 255
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#else
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# error "Unsupported architecture!"
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#endif
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#endif
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#ifndef __NR_inotify_init
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# error "Unsupported architecture!"
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#endif
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#ifndef __NR_inotify_add_watch
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# error "Unsupported architecture!"
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#endif
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#ifndef __NR_inotify_rm_watch
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# error "Unsupported architecture!"
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#endif
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static inline int inotify_init (void)
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{
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return syscall (__NR_inotify_init);
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}
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static inline int inotify_add_watch (int fd, const char *name, uint32_t mask)
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{
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return syscall (__NR_inotify_add_watch, fd, name, mask);
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}
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static inline int inotify_rm_watch (int fd, uint32_t wd)
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{
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return syscall (__NR_inotify_rm_watch, fd, wd);
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}
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#endif /* _LINUX_INOTIFY_H */
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