ustore(9) - NetBSD Manual Pages

USTORE(9)              NetBSD Kernel Developer's Manual              USTORE(9)


NAME

     ustore, ustore_8, ustore_16, ustore_32, ustore_64, ustore_char,
     ustore_short, ustore_int, ustore_long, ustore_ptr -- store data in user-
     space


SYNOPSIS

     #include <sys/systm.h>

     int
     ustore_8(const uint8_t *uaddr, uint8_t val);

     int
     ustore_16(const uint16_t *uaddr, uint16_t val);

     int
     ustore_32(const uint32_t *uaddr, uint32_t val);

     int
     ustore_64(const uint64_t *uaddr, uint64_t val);

     int
     ustore_char(const unsigned char *uaddr, unsigned char val);

     int
     ustore_short(const unsigned short *uaddr, unsigned short val);

     int
     ustore_int(const unsigned int *uaddr, unsigned int val);

     int
     ustore_long(const unsigned long *uaddr, unsigned long val);

     int
     ustore_ptr(const void **uaddr, void *val);


DESCRIPTION

     The ustore functions provide a way to store a value to single memory
     cells in user-space.  In each case, the value val is stored in the user-
     space memory location referenced by uaddr.

     The ustore_64 function is only available on systems employing the `LP64'
     memory model, which can be determined by testing for the presence of the
     _LP64 C preprocessor macro.


RETURN VALUES

     The ustore functions return 0 on success and an error number on failure.


SEE ALSO

     copy(9), ufetch(9)

NetBSD 9.3                      March 18, 2019                      NetBSD 9.3