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6 .TH LDI_READ 9F "Jun 3, 2003"
8 ldi_read, ldi_write \- Read and write from a device
12 #include <sys/sunldi.h>
14 \fB\fR\fBint\fR ldi_read(\fBldi_handle_t\fR \fIlh\fR, \fBstruct uio *\fR\fIuiop\fR, \fBcred_t *\fR\fIcr\fR);
19 \fBint\fR \fB ldi_write\fR(\fBldi_handle_t\fR \fIlh\fR, \fBstruct uio *\fR\fIuiop\fR, \fBcred_t *\fR\fIcr\fR);
38 Pointer to a credential structure used to open a device.
47 Pointer to the \fBuio(9S)\fR structure. \fBuio(9S)\fR specifies the location
48 of the read or write data. (Either userland or kernel.)
54 The \fBldi_read()\fR function passes a read request to the device entry point
55 for the device specified by the layered handle. This operation is supported
56 for block, character, and streams devices.
59 The \fBldi_write()\fR function passes a write request to the device entry
60 point for a device specified by the layered handle. This operation is supported
61 for block, character, and streams devices.
65 The \fBldi_read()\fR and \fBldi_write()\fR functions return \fB0\fR upon
66 success. If a failure occurs before the request is passed to the device, the
67 possible return values are shown below. Otherwise any other error number may be
68 returned by the device.
75 Invalid input parameters.
84 Operation is not supported for this device.
90 These functions may be called from user or kernel context.