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The following table lists the QNX 4 C library functions along with their QNX 6 equivalents. For functions that have no direct replacement, you'll find either a cover function or a suggested workaround.
Use these links to find a function quickly:
| A | B | C | D | E | F | G | H | I | K | L | |
| M | N | O | P | Q | R | S | T | U | V | W | Y |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| abstimer() | timer_settime(CLOCK_REALTIME, TIMER_ABSTIME, ...) | No | |
| _asctime() | extern char *asctime_r( const struct tm *__timeptr, char *__buff ); | No | This call is a drop-in replacement. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _bcalloc() | calloc() | No | QNX 6 doesn't support segment-based functions. |
| _beginthread() | pthread_create() | No | Note that a thread in QNX 4 is really just a separate process that shares the data segment of its parent, whereas a thread in chapter in QNX 6 is really within the same process as its parent and shares a great deal more. |
| _bexpand() | realloc() | No | QNX 6 doesn't support segment-based functions. You can use realloc() in place of this, but beware that realloc() will move your memory block to a new address if needed, and _bexpand() will fail rather than move your memory block to a new address. |
| _bfree() | free() | No | QNX 6 doesn't support segment-based functions. |
| _bfreeseg() | free() | No | QNX 6 doesn't support segment-based functions. |
| _bgetcmd() | Parse the argument vector passed to main() instead. | No | QNX 6 doesn't support segment-based functions. |
| _bheapchk() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _bheapmin() | NO LONGER SUPPORTED | No | |
| _bheapseg() | NO LONGER SUPPORTED | No | |
| _bheapset() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _bheapshrink() | NO LONGER SUPPORTED | No | |
| _bheapwalk() | NO LONGER SUPPORTED | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| block_read() | readblock() as follows: readblock(filedes, 512, block - 1, nblocks, buf) |
Yes | Note that the block number has been changed from 1-based to 0-based. |
| block_write() | writeblock() as follows: writeblock(filedes, 512, block - 1, nblocks, buf) |
Yes | Note that the block number has been changed from 1-based to 0-based. When applied to a regular file, the QNX 4 block_write() would never grow the file; the writeblock() function may cause a regular file to be extended if writing occurs beyond the end-of-file. Note that the cover function in the migration library calls writeblock(). |
| _bmalloc() | malloc() | No | QNX 6 doesn't support segment-based functions. |
| _bmsize() | _msize(), _musize(), and DH_ULEN() | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _bprintf() | snprintf() | No | |
| _brealloc() | realloc() | No | QNX 6 doesn't support segment-based functions. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _CA_PCI_BIOS_Present() | pci_present() | No | |
| _CA_PCI_Find_Class() | pci_find_class() | No | |
| _CA_PCI_Find_Device() | pci_find_device() | No | |
| _CA_PCI_Generate_Special_Cycle() | NO LONGER SUPPORTED | No | |
| _CA_PCI_Read_Config_Byte() | pci_read_config8() | No | |
| _CA_PCI_Read_Config_DWord() | pci_read_config32() | No | |
| _CA_PCI_Read_Config_Word() | pci_read_confg16() | No | |
| _CA_PCI_Write_Config_Byte() | pci_write_config8() | No | |
| _CA_PCI_Write_Config_DWord() | pci_write_config32() | No | |
| _CA_PCI_Write_Config_Word() | pci_write_config16() | No | |
| cgets() | Set /dev/tty as standard output and call gets(). | No | |
| _clear87() | NO LONGER SUPPORTED | No | |
| clock_setres() | ClockPeriod() | No | |
| console_active() | NO LONGER SUPPORTED | No | |
| console_arm() | NO LONGER SUPPORTED | No | |
| console_close() | NO LONGER SUPPORTED | No | |
| console_ctrl() | NO LONGER SUPPORTED | No | |
| console_info() | tcgetsize() for the number of rows and columns -- the remainder is NO LONGER SUPPORTED. | No | |
| console_open() | NO LONGER SUPPORTED | No | |
| console_protocol() | NO LONGER SUPPORTED | No | |
| console_read() | NO LONGER SUPPORTED | No | |
| console_size() | tcgetsize() for the number of rows and columns -- you can't set the size. | No | |
| console_state() | NO LONGER SUPPORTED | No | |
| console_write() | NO LONGER SUPPORTED | No | |
| _control87() | See <fpstatus.h> | No | |
| cprintf() | Set /dev/tty as standard output and call printf(). | No | |
| cputs() | Do fputs() to /dev/tty instead. | No | |
| Creceive() | MsgReceive() preceeded immediately by: event.sigev_notify = SIGEV_UNBLOCK; TimerTimeout(CLOCK_REALTIME, _NTO_TIMEOUT_RECEIVE, &event, NULL, NULL ); |
No | |
| Creceivemx() | MsgReceivev() preceeded immediately by: event.sigev_notify = SIGEV_UNBLOCK; TimerTimeout(CLOCK_REALTIME, _NTO_TIMEOUT_RECEIVE, &event, NULL, NULL ); |
No | |
| crypt() | crypt() | No | The QNX 6 version is Unix-compatible. For the QNX 4 version, qnx_crypt(). |
| cscanf() | Set /dev/tty as standard input and call scanf(). | No | |
| _ctime() | ctime_r() | No | |
| cuserid() | geteuid() for the user ID number followed by getpwent() to find the user name. | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| dev_arm() | See ionotify(). | Yes -- covers _DEV_EVENT_INPUT, _DEV_EVENT_OUTPUT, _DEV_EVENT_EXRDY, and _DEV_EVENT_DRAIN. | Not all event types are supported. For _DEV_EVENT_HANGUP, consider setting up a controlling terminal and handle SIGHUP. For _DEV_EVENT_WINCH, consider using SIGWINCH. |
| dev_fdinfo() | NO LONGER SUPPORTED | No | You can't get all the information, but bits and pieces can be gotten from elsewhere. |
| dev_info() | NO LONGER SUPPORTED | Yes | You can't get all the information, but bits and pieces can be gotten from elsewhere. |
| dev_insert_chars() | tcinject() | Yes | |
| dev_ischars() | tcischars() | Yes | |
| dev_mode() | tcgetattr() and tcsetattr() | Yes | |
| dev_osize() | NO LONGER SUPPORTED | No | |
| dev_read() | readcond() and ionotify() | Yes | Some of this can be implemented using
readcond() and ionotify(). The
readcond() can handle the cases where proxy == 0. The ionotify() in conjunction with
pulses (signals are even easier) can handle the cases where
proxy != 0 and min, time,
and timeout are all 0. For equivalent functionality to min, time, and timeout combined with a pulse or signal for notification, create a separate thread that requests pulse notification using ionotify(). Set up another pulse notification for the timeout. Then go into a MsgReceive() loop with with a TimerTimeout() call before the MsgReceive() call for the interbyte time. Deliver a pulse or set a signal when the min, time or timeout condition is satisfied. Note that the cover function doesn't handle the proxy and armed parameters. |
| dev_readex() | devctl() with DCMD_CHR_GETOBAND | Yes | The devctl() with DCMD_CHR_GETOBAND can be used in place of this for getting out-of-band data from resource managers that support it. Currently, only devc-* resource managers support this. |
| dev_size() | tcgetsize() and tcsetsize() | Yes | |
| dev_state() | N/A | Yes | There's no equivalent way of directly setting these states. For _DEV_EVENT_INPUT, use devctl() with DCMD_CHR_ISCHARS. For _DEV_EVENT_DRAIN, use devctl() with DCMD_CHR_OSCHARS. For _DEV_EVENT_OUTPUT, there's currently no way to determine this (because there's no way to determine the size of the output buffer). For _DEV_EVENT_EXRDY, use devctl() with DCMD_CHR_GETOBAND -- note that doing so will clear the out-of-band data in the case of devc-* drivers. |
| _disable() | InterruptLock() | No | |
| disk_get_entry() | devctl() with the DCMD_CAM_DEVINFO command. | Yes, but... | See <sys/dcmd_cam.h> and <sys/cam_device.h>. Althoguh a cover function is provided in the migration library, you might want to use the direct devctl()s that build this -- they're more useful and have better field definitions (e.g. "cylinders" in QNX 6 is 32-bit, but only 16-bit in QNX 4, and large EIDE disks have already wrapped this due to geometry translation). |
| disk_space() | statvfs() | Yes, but... | Although a cover function is provided in the migration library, you might want to switch directly to statvfs() because it has additional fields that may be useful (block size, mount flags, etc.). |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| ecvt() | sprintf() | No | |
| _ecvt() | sprintf() | No | |
| _enable() | InterruptUnlock() | No | |
| _endthread() | pthread_exit() | No | |
| _expand() | realloc() | No | You can use realloc() in place of this, but beware that realloc() will move your memory block to a new address if needed, and _expand() will fail rather than move your memory block to a new address. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _fcalloc() | calloc() | No | |
| fcvt() | sprintf() | No | |
| _fcvt() | sprintf() | No | |
| _fexpand() | realloc() | No | You can use realloc() in place of this, but beware that realloc() will move your memory block to a new address if needed, and _expand() will fail rather than move your memory block to a new address. |
| _ffree() | free() | No | |
| _fheapchk() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _fheapgrow() | NO LONGER SUPPORTED | No | |
| _fheapmin() | NO LONGER SUPPORTED | No | |
| _fheapset() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _fheapshrink() | NO LONGER SUPPORTED | No | |
| _fheapwalk() | NO LONGER SUPPORTED | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| filelength() | fstat() | No | This could be done with: fstat(fd, &st); followed by: return(S_ISBLK(st.st_mode) ? st.st_nblocks * st.st_blocksize : st.st_size);. A little more may be needed for 64-bit support. |
| _fmalloc() | malloc() | No | |
| _fmemccpy() | memccpy() | No | |
| _fmemchr() | memchr() | No | |
| _fmemcmp() | memcmp() | No | |
| _fmemcpy() | memcpy() | No | |
| _fmemicmp() | memicmp() | No | |
| _fmemmove() | memmove() | No | |
| _fmemset() | memset() | No | |
| _fmsize() | _msize(), _musize(), and DH_ULEN() | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| FP_OFF() | NO LONGER SUPPORTED | No | |
| _fpreset() | NO LONGER SUPPORTED | No | |
| _frealloc() | realloc() | No | |
| _freect() | NO LONGER SUPPORTED | No | |
| FP_SEG() | NO LONGER SUPPORTED | No | |
| _fsopen() | sopen(), fdopen() | No | Use sopen(), which returns a file descriptor, then use fdopen() to associate a stream with it. |
| _fstrcat() | strcat() | No | |
| _fstrchr() | strchr() | No | |
| _fstrcmp() | strcmp() | No | |
| _fstrcpy() | strcpy() | No | |
| _fstrcspn() | strcspn() | No | |
| _fstrdup() | strdup() | No | |
| _fstricmp() | strcmp() | No | |
| _fstrlen() | strlen() | No | |
| _fstrlwr() | strlwr() | No | |
| _fstrncat() | strncat() | No | |
| _fstrncmp() | strncmp() | No | |
| _fstrncpy() | strncpy() | No | |
| _fstrnicmp() | strnicmp() | No | |
| _fstrnset() | strnset() | No | |
| _fstrpbrk() | strpbrk() | No | |
| _fstrrchr() | strrchr() | No | |
| _fstrrev() | strrev() | No | |
| _fstrset() | strset() | No | |
| _fstrspn() | strspn() | No | |
| _fstrstr() | strstr() | No | |
| _fstrtok() | strtok() | No | |
| _fstrupr() | strupr() | No | |
| fsys_fdinfo() | NO LONGER SUPPORTED | No | |
| fsys_fstat() | NO LONGER SUPPORTED | No | Information isn't provided from the filesystem (because the QNX 6 io-blk doesn't give preferential treatment to any particular disk format. |
| fsys_get_mount_dev() | devctl() | Yes | You can use the devctl() command DCMD_FSYS_MOUNTED_ON to get this information, but it must be sent as part of a combine message. See the source for fsys_get_mount_dev() in the migration library for code for doing this. |
| fsys_get_mount_pt() | devctl() | Yes | You can use the devctl() command DCMD_FSYS_MOUNTED_BY to get this information, but it must be sent as part of a combine message. See the source for fsys_get_mount_pt() in the migration library for code for doing this. |
| fsys_stat() | NO LONGER SUPPORTED | No | Information isn't provided from the filesystem (because Neutrino io-blk doesn't give preferential treatment to any particular disk format. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| gcvt() | Consdier sprintf() | No | |
| _gcvt() | Consider sprintf() | No | |
| getch() | read() in raw mode. | No | |
| getche() | getchar() or getc() combined with putchar() or putc(). | No | |
| getcmd() | Parse the argument vector passed to main() instead. | No | |
| getnid() | netmgr_ndtostr() | Yes | Unlike QNX 4, QNX 6 doesn't use network ids
(nids). Instead, nodes on a network have
names. To get the name of the caller's node, use
netmgr_ndtostr() with the nd parameter set to
ND_LOCAL_NODE. The migration library has a getnid() function that returns whatever was passed to mig4nto-procmgr via the -n option. |
| gettimer() | timer_gettime() | No | |
| getwd() | getcwd() | No | The getwd() function requires a preallocated buffer, whereas getcwd() will allocate one if it's passed NULL for the buffer. The getcwd() function also has a size parameter. For portability, use getcwd() instead of getwd(). |
| _gmtime() | gmtime_r() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| halloc() | calloc() | No | |
| _heapchk() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _heapenable() | NO LONGER SUPPORTED | No | |
| _heapgrow() | NO LONGER SUPPORTED | No | |
| _heapmin() | NO LONGER SUPPORTED | No | |
| _heapset() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _heapshrink() | NO LONGER SUPPORTED | No | |
| _heapwalk() | NO LONGER SUPPORTED | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| hfree() | free() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| ioctl() | devctl() | No | For the dcmds to use with QSSL-supplied resource managers, see <sys/dcmd_*.h>. |
| inp() | in8() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| inpd() | in32() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| inpw() | in16() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| __isascii() | isascii() | No | |
| __iscsym() | isalpha(), isdigit() | No | Replace with an expression using isalpha(), isdigit() and testing for the underscore character. |
| __iscsymf() | isalpha() | No | Replace with an expression using isalpha() and testing for the underscore character. |
| _itoa() | itoa() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| kbhit() | tcischars() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| lfind() | NO LONGER SUPPORTED | No | |
| _localtime() | localtime_r() | No | |
| lock() | fcntl() with F_SETLK | No | |
| locking() | tell() and fcntl() with F_SETLK | No | |
| _locking() | tell() and fcntl() with F_SETLK | No | |
| log2() | NO LONGER SUPPORTED | No | |
| _lrotl() | NO LONGER SUPPORTED | No | |
| _lrotr() | NO LONGER SUPPORTED | No | |
| lsearch() | NO LONGER SUPPORTED | No | |
| _ltoa() | ltoa() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _makepath() | NO LONGER SUPPORTED | No | |
| __max() | NO LONGER SUPPORTED | No | |
| _memavl() | NO LONGER SUPPORTED | No | |
| _memicmp() | memicmp() | No | |
| _memmax() | NO LONGER SUPPORTED | No | |
| __min() | NO LONGER SUPPORTED | No | |
| MK_FP() | NO LONGER SUPPORTED | No | |
| mktimer() | timer_create() | No | |
| mount() | mount() | No | This is supported, but its parameters have changed. |
| mouse_close() | NO LONGER SUPPORTED | No | |
| mouse_flush() | NO LONGER SUPPORTED | No | |
| mouse_open() | NO LONGER SUPPORTED | No | |
| mouse_param() | NO LONGER SUPPORTED | No | |
| mouse_read() | NO LONGER SUPPORTED | No | |
| movedata() | memcpy() | No | |
| _msize() | _msize(), _musize(), and DH_ULEN() | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _ncalloc() | calloc() | No | |
| _nexpand() | realloc() | No | You can use realloc() in place of this, but beware that realloc() will move your memory block to a new address if needed, and _nexpand() will fail rather than move your memory block to a new address. |
| _nfree() | free() | No | |
| _nheapchk() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _nheapgrow() | NO LONGER SUPPORTED | No | |
| _nheapmin() | NO LONGER SUPPORTED | No | |
| _nheapset() | mallopt() with MALLOC_VERIFY | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _nheapshrink() | NO LONGER SUPPORTED | No | |
| _nheapwalk() | NO LONGER SUPPORTED | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| _nmalloc() | malloc() | No | |
| _nmsize() | _msize(), _musize(), and DH_ULEN() | No | See the malloc_g library described in the "Heap Analysis" chapter in Programmer's Guide. |
| nosound() | NO LONGER SUPPORTED | No | |
| _nrealloc() | realloc() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| onexit() | atexit() | No | |
| outp() | out8() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| outpd() | out32() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| outpw() | out16() | No | Note that mmap_device_io() should be called before calling the port I/O functions. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| print_usage() | NO LONGER SUPPORTED | No | |
| putch() | Set /dev/tty as standard output and call putchar(). | No | Alternate method: simply open /dev/tty and use putc(). |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| qnx_adj_time() | ClockAdjust() | No | |
| qnx_device_attach() | rsrcdbmgr_devno_attach() | No | |
| qnx_device_detach() | rsrcdbmgr_devno_detach() | No | |
| qnx_display_hex() | NO LONGER SUPPORTED | No | |
| qnx_display_msg() | NO LONGER SUPPORTED | No | |
| qnx_fd_attach() | NO LONGER SUPPORTED | No | The resource manager library removes the need for this. |
| qnx_fd_detach() | NO LONGER SUPPORTED | No | The resource manager library removes the need for this. |
| qnx_fd_query() | None currently | No | There may be something later. |
| qnx_fullpath() | realpath() | No | Use realpath() followed by a call to netmgr_ndtostr() to get the node name. |
| qnx_getclock() | None currently for remote nodes. | No | Currently, there's no way of getting the time from another node in a native QNX network. Use clock_gettime() to get the time on the local node. |
| qnx_getids() | NO LONGER SUPPORTED | No | See the section on "Getting process information" in the Programming Issues chapter in this guide. |
| qnx_hint_attach() | InterruptAttach() or InterruptAttachEvent() | No | |
| qnx_hint_detach() | InterruptDetach() | No | |
| qnx_hint_mask() | InterruptMask() and InterruptUnmask() | No | |
| qnx_hint_query() | NO LONGER SUPPORTED | No | |
| qnx_ioctl() | devctl() | No | For the dcmds to use with QSSL-supplied resource managers, see <sys/dcmd_*.h>. |
| qnx_ioctlmx() | devctl() | No | For the dcmds to use with QSSL-supplied resource managers, see <sys/dcmd_*.h>. |
| qnx_name_attach() | name_attach() or write a resource manager | Yes | If you're not using the migration library and you're
using QNX 6, then use
name_attach() or write resource managers. For some other methods that the sender can use to find the receiver, see the section on "How does the sender find the receiver?" in the Programming Issues chapter in this guide. |
| qnx_name_detach() | Yes | If you're not using the migration library and you're replacing qnx_name_attach() with name_attach(), then use name_detach(). | |
| qnx_name_locate() | name_open() or write a resource manager | Yes | If you're not using the migration library and you're
using QNX 6, then use
name_attach() or write resource managers. For some other methods that the sender can use to find the receiver, see the section on "How does the sender find the receiver?" in the Programming Issues chapter in this guide. |
| qnx_name_locators() | NO LONGER SUPPORTED | No | |
| qnx_name_nodes() | NO LONGER SUPPORTED | No | |
| qnx_name_query() | Yes | Names registered via name_attach() (QNX 6)
appear in
/dev/name/local and
/dev/name/global. The migration library has a qnx_name_query() function for querying the names registered using the qnx_name_attach() migration library function. |
|
| qnx_net_alive() | netmgr_ndtostr() with ND_LOCAL_NODE, readdir() | No | Find out the name of your network directory by calling netmgr_ndtostr() with ND_LOCAL_NODE for the nd parameter. Then walk through the network directory using readdir(). The nodes listed are those that are up. |
| qnx_nidtostr() | netmgr_ndtostr() | No | |
| qnx_osinfo() | NO LONGER SUPPORTED | Yes | See the section on "Getting system information" in the Programming Issues chapter in this guide. |
| qnx_osstat() | sysconf() | No | QNX 6 doesn't have as many hard limits as QNX 4, but instead keeps allocating memory until it runs out. Some limits can be found out by calling sysconf(). |
| qnx_pflags() | NO LONGER SUPPORTED | No | See the section on "Process flags" in the Programming Issues chapter in this guide. |
| qnx_prefix_attach() | name_attach() or pathmgr_symlink() | No | If you were using this function just to put a name in
the prefix table so that other processes could find yours,
then use name_attach() instead (QNX 6). If you were using this function in an I/O manager that handled _IO_* messages, then you need to convert to the resource manager library. If you were using this function to create an alias, then use pathmgr_symlink() instead. |
| qnx_prefix_detach() | name_detach() or resmgr_detach() or pathmgr_unlink() or unlink() | No | If you're using name_attach() to register a
name (QNX 6), then use
name_detach() to detach it. If you're writing a resource manager and had attached the name via resmgr_attach(), then use resmgr_detach() to detach it. If you wanted to remove a symlink created using pathmgr_symlink(), then use pathmgr_unlink() or unlink() instead. |
| qnx_prefix_getroot() | NO LONGER SUPPORTED | No | QNX 6 doesn't have the concept of a network root. |
| qnx_prefix_query() | NO LONGER SUPPORTED | No | For the names that are associated with a resource manager, you can walk through the directory structure under /proc/mount. The numbers shown refer to a resource manager and are nd,pid,chid,handle,type where the type is one of the _FTYPE_* macros in <sys/ftype.h>. Names that are the equivalent of replacements (or aliases) aren't visible in QNX 6. |
| qnx_prefix_setroot() | NO LONGER SUPPORTED | No | QNX 6 doesn't have the concept of a network root. |
| qnx_proxy_attach() | Replace proxies with pulses | Yes | If you're not using the migration library, then consider replacing proxies with pulses. |
| qnx_proxy_detach() | NO LONGER SUPPORTED | Yes | If you're not using the migration library and you're replacing qnx_proxy_attach() with pulses, then you may need to detach the connection for delivering the pulse. |
| qnx_proxy_rem_attach() | Replace proxies with pulses | No | If you're not using the migration library, then consider replacing proxies with pulses. |
| qnx_proxy_rem_detach() | Replace proxies with pulses | No | If you're not using the migration library and you're replacing qnx_proxy_rem_attach() with pulses, then you may need to detach the connection for delivering the pulse. |
| qnx_psinfo() | NO LONGER SUPPORTED | Yes | See the section on "Getting system information" in the Programming Issues chapter in this guide. |
| qnx_scheduler() | sched_setscheduler() for the local case. | No | Currently, there's no way to do this across the network. |
| qnx_segment_alloc() | NO LONGER SUPPORTED | No | See shm_open(), ftruncate(), and mmap(). |
| qnx_segment_alloc_flags() | NO LONGER SUPPORTED | No | See shm_open(), ftruncate(), and mmap(). |
| qnx_segment_arm() | NO LONGER SUPPORTED | No | |
| qnx_segment_flags() | NO LONGER SUPPORTED | No | See mmap(). |
| qnx_segment_free() | NO LONGER SUPPORTED | No | See munmap() and shm_unlink(). |
| qnx_segment_get() | NO LONGER SUPPORTED | No | |
| qnx_segment_huge() | NO LONGER SUPPORTED | No | |
| qnx_segment_index() | NO LONGER SUPPORTED | No | |
| qnx_segment_info() | NO LONGER SUPPORTED | No | To get a physical address, use posix_mem_offset(). |
| qnx_segment_overlay() | NO LONGER SUPPORTED | No | See mmap_device_memory() or mmap(). |
| qnx_segment_overlay_flags() | NO LONGER SUPPORTED | No | See mmap_device_memory() or mmap(). |
| qnx_segment_put() | NO LONGER SUPPORTED | No | |
| qnx_segment_raw_alloc() | shm_ctl() | No | Create a shared memory object and use shm_ctl() to both set its size and to create it as contiguous. If the process dies, then as long as you don't do shm_unlink() the memory will still be set aside. To get a physical address, use posix_mem_offset(). |
| qnx_segment_raw_free() | shm_unlink() | No | To return memory allocated as detailed above under
qnx_segment_raw_alloc(), close() the file
descriptor, munmap() the memory, and call
shm_unlink(). There's no equivalent function for adding memory that wasn't reported by the BIOS. However, this sort of thing can be done using the -M option to startup-* (Utilities reference) or from the startup code using add_mem() (see Building Embedded Systems in the Embedding SDK package). |
| qnx_segment_realloc() | N/A | No | You can grow shared memory at any time. You can shrink it only to 0 bytes and only when no other process has it mapped. Shrinking it to other sizes may be implemented in a furture release. |
| qnx_setclock() | clock_settime() for the local case. | No | Currently, there's no way to do this across the network. |
| qnx_setids() | NO LONGER SUPPORTED | No | |
| qnx_sflags() | NO LONGER SUPPORTED | No | To obtain the equivalent of most of these flags, see the source for qnx_osinfo() in the migration library. |
| qnx_sid_query() | NO LONGER SUPPORTED | No | |
| qnx_spawn() | spawn() and spawn* family. | Yes | See the section on "Process issues" in the Programming Issues chapter in this guide. |
| qnx_strtonid() | netmgr_ndtostr() | No | |
| qnx_sync() | sync(), possibly with fdatasync() or fsync(). | No | Note that these will not sync a filesystem on another node of the network. |
| qnx_ticksize() | ClockPeriod() | No | This behaves like qnx_ticksize() with the _TICKSIZE_CLOSEST flag. |
| qnx_trace_close() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_trace_info() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_trace_open() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_trace_read() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_trace_severity() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_trace_trigger() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| qnx_umask() | N/A | No | There's no way to set the umask of another process, but you can use umask() to set the umask for the caller. |
| qnx_vc_attach() | ConnectAttach() | No | |
| qnx_vc_detach() | ConnectDetach() | No | |
| qnx_vc_name_attach() | open() or name_open() | No | This is the equivalent of doing open() (or name_open()) of a name that is registered by a process on another node via resmgr_attach() (or name_attach()). |
| qnx_vc_poll_parm() | NO LONGER SUPPORTED | No | See the various docs on QNX 6 native networking for similar options. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| Readmsg() | MsgRead() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| Readmsgmx() | MsgReadv() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| Receive() | MsgReceive() | Yes | Note that this takes a channel ID returned from
ChannelCreate() instead of a process ID.
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| Receivemx() | MsgReceivev() | Yes | Note that this takes a channel ID returned from
ChannelCreate() instead of a process ID.
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| Relay() | NO LONGER SUPPORTED | No | |
| reltimer() | timer_settime(CLOCK_REALTIME, 0, ...) | No | |
| Reply() | MsgReply() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| Replymx() | MsgReplyv() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| rmtimer() | timer_delete() | No | |
| _rotl() | NO LONGER SUPPORTED | No | |
| _rotr() | NO LONGER SUPPORTED | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _searchenv() | searchenv() | No | Note that searchenv() doesn't search in the current directory unless it's specified in the given environment variable. |
| segread() | NO LONGER SUPPORTED | No | |
| Send() | MsgSend() | Yes | Note that this takes a connection ID (coid)
instead of a process ID. This coid (a file descriptor) can be obtained from
open() or ConnectAttach(..., _NTO_SIDE_CHANNEL, ...).
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| Sendfd() | MsgSend() | No | Note that this takes a file descriptor (which is also a
connection ID in QNX 6).
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| Sendfdmx() | MsgSendv() | No | Note that this takes a file descriptor (which is also a
connection ID in QNX 6).
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| Sendmx() | MsgSendv() | Yes | Note that this takes a connection ID (coid)
instead of a process ID. This coid (a file descriptor) can be obtained from
open() or ConnectAttach(..., _NTO_SIDE_CHANNEL, ...).
For more information, see the section on "Channel IDs vs process IDs" in the Programming Issues chapter in this guide. |
| _setmx() | SETIOV() for use with the QNX 6 Msg*() functions. | Yes -- a _setmx() macro is provided in the migration library header file. | |
| set_new_handler() | N/A | No | This is available in the C++ library (posted as free software for QNX 6). |
| _set_new_handler() | N/A | No | This is available in the C++ library (posted as free software for QNX 6). |
| sound() | NO LONGER SUPPORTED | No | |
| _splitpath() | NO LONGER SUPPORTED | No | |
| _splitpath2() | NO LONGER SUPPORTED | No | |
| stackavail() | __stackavail() | No | |
| _status87() | NO LONGER SUPPORTED | No | |
| _strdate() | time(), localtime(), gmtime(), and strftime() | No | |
| _strdup() | strdup() | No | |
| _stricmp() | stricmp() | No | |
| _strlwr() | strlwr() | No | |
| _strnicmp() | strnicmp() | No | |
| _strrev() | strrev() | No | |
| _strtime() | time(), localtime(), gmtime(), and strftime() | No | |
| _strupr() | strupr() | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| tcsetct() | N/A | No | Although there's no equivalent function for this, the first tty that is opened without O_NOCTTY after a call to setsid() and that doesn't already have a controlling process will cause the calling process to be the controlling process for this tty. |
| term_attr_type() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_axis() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_bar() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_box() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_box_fill() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_box_off() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_box_on() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_clear() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_color() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_cur() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_delete_char() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_delete_line() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_down() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_field() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_fill() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_flush() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_get_line() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_home() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_init() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_insert_char() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_insert_line() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_insert_off() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_insert_on() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_key() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_left() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_lmenu() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_load() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_menu() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_default() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_flags() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_handler() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_hide() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_move() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_off() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_on() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_mouse_process() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_printf() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_receive() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_relearn_size() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_resize_off() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_resize_on() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_restore() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_restore_image() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_right() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_save_image() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_scroll_down() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_scroll_up() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_setup() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_type() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_unkey() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_up() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_video_off() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_video_on() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| term_window_scan() | NO LONGER SUPPORTED | No | Use ncurses instead. |
| tfork() | N/A | No | QNX 6 has true POSIX threads. See the pthread_*() functions (specifically, pthread_create()) as a starting point. |
| timer_create() | timer_create() | No | The QNX 4 version was based on a draft standard. In QNX 6, the timer ID is returned through the third parameter, and the sigevent structure is filled in differently. |
| _tolower() | tolower() | No | |
| _toupper() | toupper() | No | |
| Trace0() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace0b() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace1() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace2() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace2b() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace3() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace4() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace4b() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace5() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace5b() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace6() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trace6b() | NO LONGER SUPPORTED | No | Consider using syslog() for logging instead. |
| Trigger() | N/A | Yes | Proxies have been replaced by
pulses. See the section on
"Proxies vs
pulses" in the chapter on Programming Issues
in this guide. The migration library Trigger() function works the same as the QNX 4 one, but it's slower if the "triggerer" is in a different process than that which the proxy is attached to. For details, see the Trigger() function in the Migration Library chapter in this guide. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| umount() | umount() | No | This is supported, but it now has unused flags parameters. |
| ungetch() | ungetc() | No | |
| unlock() | fcntl() with F_SETLK | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| _vbprintf() | vsnprintf() | No | |
| vcprintf() | vprintf(), with /dev/tty set as standard output. | No | |
| vcscanf() | vsscanf(), with /dev/tty set as standard output. | No |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| Writemsg() | MsgWrite() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| Writemsgmx() | MsgWritev() | Yes | Note that this takes the receive ID returned from MsgReceive() instead of a process ID. |
| QNX 4 function | QNX 6 equivalent | In migration library? | Comments |
|---|---|---|---|
| Yield() | sched_yield() | Yes |
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