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.Dd January 17, 2011 .Dt PROP_SEND_SYCALL 3 .Os .Sh NAME .Nm prop_array_send_syscall , .Nm prop_array_recv_syscall , .Nm prop_dictionary_send_syscall , .Nm prop_dictionary_recv_syscall .Nd send and receive property lists to and from the kernel using syscalls .Sh SYNOPSIS n prop/proplib.h .Ft int .Fn prop_array_send_syscall "prop_array_t array" "struct plistref *prefp" .Ft int .Fn prop_array_recv_syscall "const struct plistref *prefp" \ "prop_array_t *arrayp" .Ft int .Fn prop_dictionary_send_syscall "prop_dictionary_t dict" \ "struct plistref *prefp" .Ft int .Fn prop_dictionary_recv_syscall "const struct plistref *prefp" \ "prop_dictionary_t *dictp" .Sh DESCRIPTION The .Fn prop_array_send_syscall , .Fn prop_array_recv_syscall , .Fn prop_dictionary_send_syscall , and .Fn prop_dictionary_recv_syscall functions implement the user space side of a protocol for sending property lists to and from the kernel using .Xr syscall 2 . .Sh RETURN VALUES If successful, functions return zero. Otherwise, an error number is returned to indicate the error. .Sh EXAMPLES The following
q simplified example demonstrates using .Fn prop_dictionary_send_syscall and .Fn prop_dictionary_recv_syscall in an application: d -literal void foo_setprops(prop_dictionary_t dict) { struct pref pref; (void) prop_dictionary_send_syscall(dict, \*[Am]pref); (void) my_syscall_set(\*[Am]pref); } prop_dictionary_t foo_getprops(void) { prop_dictionary_t dict; struct pref pref; (void) my_syscall_get(\*[Am]pref); if (prop_dictionary_recv_syscall(\*[Am]pref, \*[Am]dict) != 0) return (NULL); return (dict); } .Ed .Sh ERRORS .Fn prop_array_send_syscall and .Fn prop_dictionary_send_syscall will fail if: l -tag -width Er t Bq Er ENOMEM Cannot allocate memory t Bq Er ENOTSUP Not supported .El
p .Fn prop_array_recv_syscall and .Fn prop_dictionary_recv_syscall will fail if: l -tag -width Er t Bq Er EIO Input/output error t Bq Er ENOTSUP Not supported .El .Sh SEE ALSO .Xr prop_array 3 , .Xr prop_dictionary 3 , .Xr proplib 3 , .Xr prop_copyin_ioctl 9 .Sh HISTORY The .Xr proplib 3 property container object library first appeared in .Nx 4.0 .
Indexes created Sat Sep 20 22:09:52 GMT 2025