mirror of
https://github.com/RGBCube/serenity
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c8e2bb5605
The syscall is quite simple:
int watch_file(const char* path, int path_length);
It returns a file descriptor referring to a "InodeWatcher" object in the
kernel. It becomes readable whenever something changes about the inode.
Currently this is implemented by hooking the "metadata dirty bit" in
Inode which isn't perfect, but it's a start. :^)
24 lines
472 B
C++
24 lines
472 B
C++
#include <Kernel/Syscall.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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extern "C" {
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int fcntl(int fd, int cmd, ...)
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{
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va_list ap;
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va_start(ap, cmd);
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u32 extra_arg = va_arg(ap, u32);
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int rc = syscall(SC_fcntl, fd, cmd, extra_arg);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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int watch_file(const char* path, int path_length)
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{
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int rc = syscall(SC_watch_file, path, path_length);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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}
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