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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
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C Library Reference
R
resmgr_pathname()
Return the pathname associated with an ID

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
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        Allocate or reallocate a block of memory occupied by an array, and ensure that any newly allocated or released memory is cleared
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        Compile a regular expression
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        Explain a regular expression error code
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        Compute the floating point remainder
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      - resmgr_attach()
        Attach a path to the pathname space
      - resmgr_block()
        Block while waiting for a message
      - resmgr_connect_funcs_t
        Table of POSIX-level connect functions
      - resmgr_context_alloc()
        Allocate a resource-manager context
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        Free a resource-manager context
      - resmgr_context_t
        Context information that's passed between resource-manager functions
      - resmgr_detach(), resmgr_detach_ctp()
        Remove a pathname from the pathname space
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        Get the device and inode number
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        Handle resource manager messages
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        Table of POSIX-level I/O functions
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        Extract the I/O function pointers associated with the client connection
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        Process a message again in a resource manager
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        Read a message from a client, from local data, or both
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        Get the size of a message and its local and remote parts
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        Read a message from a client, from local data, or both
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        Read a message from a client
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        Read a message from a client
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        Reply to a client with a message, endian-swapping if required
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        Reply to a client with a message, endian-swapping if required
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        Write a message to a client
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        Write a message to a client
      - _RESMGR_NPARTS()
        Indicate how many parts from the ctp->iov structure to return to the client
      - resmgr_ocb()
        Retrieve an Open Control Block
      - resmgr_ocb_iofuncs()
        Extract the OCB and I/O function pointers associated with the client connection
      - resmgr_open_bind()
        Associate an OCB with an open request
      - resmgr_pathname()
        Return the pathname associated with an ID
      - _RESMGR_PTR()
        Get one part from the ctp->iov structure and fill in its fields
      - _RESMGR_STATUS()
        Set the status member of a resource-manager context
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        Disassociate an OCB from an open request
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        Rewind a file stream to the beginning of the file
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        Rewind a directory stream to the start of the directory
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        Round to the nearest integral value
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        Delete an empty directory
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        Round a number to the closest integer
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        Reserve a system resource for a process
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        Create a system resource
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        Destroy a system resource
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        Return a system resource to the resource database
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        Get major and minor device numbers
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        Detach a major and minor number
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        Query the resource database
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    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
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QNX Toolkit for Visual Studio Code
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QNX Hypervisor User's Guide
This User's Guide explains the QNX hypervisor architecture and provides instructions for installing and running a QNX Hypervisor system, changing system components and configuration, and using hypervisor features such as virtual devices (vdevs).
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

resmgr_pathname()

QNX SDP8.0C Library ReferenceAPIDeveloper

Return the pathname associated with an ID

Synopsis:

#include <sys/iofunc.h>
#include <sys/resmgr.h>

int resmgr_pathname( int id,
                     unsigned flags, 
                     char* path, 
                     int maxbuf );

Arguments:

id: The link ID that resmgr_attach() returned.
flags: Use 0.
path: A pointer to a buffer where the function can store the path name.
maxbuf: The size of the buffer.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The resmgr_pathname() function returns the pathname associated with an id that's returned from resmgr_attach(), it's also the ctp->id value of all the resmgr callout functions.

If the id was obtained from calling resmgr_attach() with _RESMGR_FLAG_DIR specified, then the path name includes a trailing slash.

Returns:

The length of the path, including the terminating NUL character, or -1 if an error occurs (errno is set).

Errors:

EFAULT: A fault occurred in a server's address space when it tried to access the caller's message buffers.
ESRCH: The thread indicated by ctp->rcvid doesn't exist or its connection is detached.
ESRVRFAULT: A fault occurred when the kernel tried to access the buffers provided.

Classification:


Safety:
Cancellation point	No
Signal handler	Yes
Thread	Yes

Page updated: August 11, 2025