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ioctl.h
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1
9 #ifndef _SYS_IOCTL
10 #define _SYS_IOCTL
11
29 extern int ioctl(int fd, int request, unsigned long data);
30
31 #endif /* _SYS_IOCTL */
32
ioctl
int ioctl(int fd, int request, unsigned long data)
Manipulates the underlying device parameters of special files.