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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH LDI_PROP_LOOKUP_INT_ARRAY 9F "Jun 3, 2003" .SH NAME ldi_prop_lookup_int_array, ldi_prop_lookup_int64_array, ldi_prop_lookup_string_array, ldi_prop_lookup_string, ldi_prop_lookup_byte_array \- Lookup property information .SH SYNOPSIS .LP .nf #include \fBint\fR \fBldi_prop_lookup_int_array\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint_t\fR \fIflags\fR, \fBchar *\fR\fIname\fR, \fBint **\fR\fIdatap\fR, \fBuint_t *\fR\fInelementsp\fR); .fi .LP .nf \fBint\fR \fBldi_prop_lookup_int64_array\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint_t\fR \fIflags\fR, \fBchar *\fR\fIname\fR, \fBint64_t **\fR\fIdatap\fR, \fBuint_t *\fR\fInelementsp\fR); .fi .LP .nf \fBint\fR \fBldi_prop_lookup_string_array\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint_t\fR \fIflags\fR, \fBchar *\fR\fIname\fR, \fBchar ***\fR\fIdatap\fR, \fBuint_t *\fR\fInelementsp\fR); .fi .LP .nf \fBint\fR \fBldi_prop_lookup_string\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint_t\fR \fIflags\fR, \fBchar *\fR\fIname\fR, \fBchar **\fR\fIdatap\fR); .fi .LP .nf \fBint\fR \fBldi_prop_lookup_byte_array\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint_t\fR \fIflags\fR, \fBchar *\fR\fIname\fR, \fBuchar_t **\fR\fIdatap\fR, \fBuint_t *\fR\fInelements\fR); .fi .SH PARAMETERS .sp .ne 2 .na \fB\fIlh\fR\fR .ad .RS 9n Layered handle. .RE .sp .ne 2 .na \fB\fIflags\fR\fR .ad .RS 9n Possible flag values are some combination of: .sp .ne 2 .na \fBLDI_DEV_T_ANY\fR .ad .RS 21n Match the lookup request independent of the actual \fBdev_t\fR value that was used when the property was created. The flag indicates any \fBdev_t\fR value (including DDI_DEV_T_NONE) associated with a possible property match will satisfy the matching criteria. .RE .sp .ne 2 .na \fBDDI_PROP_DONTPASS\fR .ad .RS 21n Do not pass request to parent device information node if the property is not found. .RE .sp .ne 2 .na \fBDDI_PROP_NOTPROM\fR .ad .RS 21n Do not look at PROM properties (ignored on platforms that do not support PROM properties). .RE .RE .sp .ne 2 .na \fBname\fR .ad .RS 13n String containing the property name. .RE .sp .ne 2 .na \fBnelements\fR .ad .RS 13n The address of an unsigned integer which, upon successful return, contains the number of elements accounted for in the memory pointed at by datap. Depending on the interface you use, the elements are either integers, strings or bytes. .RE .sp .LP datap .sp .ne 2 .na \fBldi_prop_lookup_int_array()\fR .ad .sp .6 .RS 4n Pointer address to an array of integers which, upon successful return, point to memory containing the integer array property value. .RE .sp .ne 2 .na \fBldi_prop_lookup_int64_array()\fR .ad .sp .6 .RS 4n Pointer address to an array of 64-bit integers which, upon successful return, point to memory containing the integer array property value. .RE .sp .ne 2 .na \fBldi_prop_lookup_string_array()\fR .ad .sp .6 .RS 4n Pointer address to an array of strings which, upon successful return, point to memory containing the array of strings. The string array is formatted as an array of pointers to NULL terminated strings, much like the argv argument to \fBexecve(2)\fR. .RE .sp .ne 2 .na \fBldi_prop_lookup_string()\fR .ad .sp .6 .RS 4n Pointer address to a string which, upon successful return, points to memory containing the NULL terminated string value of the property. .RE .sp .ne 2 .na \fBldi_prop_lookup_byte_array()\fR .ad .sp .6 .RS 4n Pointer address to an array of bytes which, upon successful return, point to memory containing the property byte array value. .RE .SH INTERFACE LEVEL .sp .LP Solaris DDI specific (Solaris DDI). .SH DESCRIPTION .sp .LP The property look up functions search for and, if found, return the value of a given property. Properties are searched for based on the dip and dev_t values associated with the layered handle, the property name, and type of the data (integer, string, or byte). .sp .LP The property search order is as follows: .RS +4 .TP 1. Search software properties created by the driver. .RE .RS +4 .TP 2. Search the software properties created by the system (or nexus nodes in the device info tree). .RE .RS +4 .TP 3. Search the driver global properties list. .RE .RS +4 .TP 4. If DDI_PROP_NOTPROM is not set, search the PROM properties (if they exist). .RE .RS +4 .TP 5. If DDI_PROP_DONTPASS is not set, pass this request to the parent device information node of the device represented by the layered handle. .RE .RS +4 .TP 6. Return \fBDDI_PROP_NOT_FOUND\fR. .RE .sp .LP Typically, the specific dev_t value associated with the device represented by the layered handle (ldi_handle_t) is used as a part of the property match criteria. This association is handled by the layered driver infrastructure on behalf of the consumers of the ldi property look up functions. .sp .LP However, if the LDI_DEV_T_ANY flag is used, the ldi property lookup functions match the request regardless of the dev_t value associated with the property at the time of its creation. If a property was created with a dev_t set to DDI_DEV_T_NONE, then the only way to look up this property is with the LDI_DEV_T_ANY flag. PROM properties are always created with a dev_t set to DDI_DEV_T_NONE. .sp .LP name must always be set to the name of the property being looked up. .sp .LP For the l\fBdi_prop_lookup_int_array()\fR, \fBldi_prop_lookup_int64_array()\fR, \fBldi_prop_lookup_string_array()\fR, \fBldi_prop_lookup_string()\fR, and \fBldi_prop_lookup_byte_array()\fR functions, datap is the address of a pointer which, upon successful return, points to memory containing the value of the property. In each case *datap points to a different type of property value. See the individual descriptions of the functions below for details on the different return values. nelementsp is the address of an unsigned integer which, upon successful return, contains the number of integer, string or byte elements accounted for in the memory pointed at by *datap. .sp .LP All of the property look up functions may block to allocate memory needed to hold the value of the property. .sp .LP When a driver has obtained a property with any look up function and is finished with that property, it must be freed by call \fBddi_prop_free()\fR. \fBddi_prop_free()\fR must be called with the address of the allocated property. For instance, if you call \fBldi_prop_lookup_int_array()\fR with datap set to the address of a pointer to an integer, &my-int-ptr, the companion free call is ddi_prop_free(my-int-ptr). .sp .LP Property look up functions are described below: .sp .ne 2 .na \fB\fBldi_prop_lookup_int_array()\fR\fR .ad .sp .6 .RS 4n This function searches for and returns an array of integer property values. An array of integers is defined to *nelementsp number of 4 byte long integer elements. datap should be set to the address of a pointer to an array of integers which, upon successful return, will point to memory containing the integer array value of the property. .RE .sp .ne 2 .na \fB\fBldi_prop_lookup_int64_array()\fR\fR .ad .sp .6 .RS 4n This function searches for and returns an array of integer property values. An array of integers is defined to *nelementsp number of 8 byte long integer elements. datap should be set to the address of a pointer to an array of integers which, upon successful return, will point to memory containing the integer array value of the property This function does not search the PROM for 64-bit property values. .RE .sp .ne 2 .na \fB\fBldi_prop_lookup_string_array()\fR\fR .ad .sp .6 .RS 4n This function searches for and returns a property that is an array of strings. datap should be set to an address of a pointer to an array of strings which, upon successful return, will point to memory containing the array of strings. The array of strings is formatted as an array of pointers to null-terminated strings, much like the argv argument to \fBexecve\fR(2). .RE .sp .ne 2 .na \fB\fBldi_prop_lookup_string()\fR\fR .ad .sp .6 .RS 4n This function searches for and returns a property that is a null-terminated string. datap should be set to the address of a pointer to a string which, upon successful return, points to memory containing the string value of the property. .RE .sp .ne 2 .na \fB\fBldi_prop_lookup_byte_array()\fR\fR .ad .sp .6 .RS 4n This function searches for and returns a property that is an array of bytes. datap should be set to the address of a pointer to an array of bytes which, upon successful return, points to memory containing the byte array value of the property. .RE .sp .ne 2 .na \fB\fBddi_prop_free()\fR\fR .ad .sp .6 .RS 4n Frees the resources associated with a property previously allocated using \fBldi_prop_lookup_int_array()\fR, \fBldi_prop_lookup_int64_array()\fR, \fBldi_prop_lookup_string_array()\fR, \fBldi_prop_lookup_string()\fR, and \fBldi_prop_lookup_byte_array()\fR. .RE .SH RETURN VALUES .sp .LP The functions \fBldi_prop_lookup_int_array()\fR, \fBldi_prop_lookup_int64_array()\fR, \fBldi_prop_lookup_string_array()\fR, \fBldi_prop_lookup_string()\fR, and \fBldi_prop_lookup_byte_array()\fR return the following values: .sp .ne 2 .na \fBDDI_PROP_SUCCESS\fR .ad .RS 26n Property found and returned. .RE .sp .ne 2 .na \fBDDI_PROP_INVAL_ARG\fR .ad .RS 26n If an attempt is made to look up a property with a NULL ldi handle, name is NULL or name is a the null string. .RE .sp .ne 2 .na \fBDDI_PROP_NOT_FOUND\fR .ad .RS 26n Property not found. .RE .sp .ne 2 .na \fBDDI_PROP_UNDEFINED\fR .ad .RS 26n Prop explicitly undefined (see \fBddi_prop_undefine(9F\fR)). .RE .sp .ne 2 .na \fBDDI_PROP_CANNOT_DECODE\fR .ad .RS 26n Property value cannot be decoded. .RE .SH CONTEXT .sp .LP These functions may be called from user or kernel context. .SH EXAMPLE .sp .in +2 .nf Using ldi_prop_lookup_int64_array(). The following example demonstrates the use of ldi_prop_lookup_int64_array(). int64_t *options; uint_t noptions; /* * Get the data associated with the integer "options" property * array, along with the number of option integers */ if (ldi_prop_lookup_int64_array(lh, LDI_DEV_T_ANY|DDI_PROP_NOTPROM, "options", &options, &noptions) == DDI_PROP_SUCCESS) { /* * Process the options data from the property * we just received. Let's do "our thing" with data. */ xx_process_options(options, noptions); /* * Free the memory allocated for the property data */ ddi_prop_free(options); } .fi .in -2 .SH SEE ALSO .sp .LP \fBexecve\fR(2), \fBddi_prop_free\fR(9F), \fBddi_prop_lookup\fR(9F), \fBldi_prop_exists\fR(9F) . .sp .LP \fIWriting Device Drivers\fR