Open System Services System Calls Reference Manual (G06.28+, H06.05+)

SPT_READX(2) OSS System Calls Reference Manual
Pointers after an SPT_READX( ) call
After a successful SPT_READX() call to an unstruc-
tured file, the file pointers are:
— Current-record pointer is old next-record
pointer.
— Next-record pointer is old next-record pointer
plus count_read.
RETURN VALUES
The SPT_READX() function returns 0 (zero) upon successful completion. Otherwise, this func-
tion returns a nonzero Guardian file-system error number that indicates the outcome of the opera-
tion.
For information about Guardian file-system error numbers, see the Guardian Procedure Errors
and Messages Manual.
ERRORS
None. This function does not set the errno variable.
RELATED INFORMATION
Functions: SPT_CANCEL(2), SPT_CONTROL(2), SPT_FILE_CLOSE_(2),
SPT_FILE_OPEN_(2), SPT_LOCKFILE(2), SPT_LOCKREC(2), SPT_READLOCKX(2),
SPT_READUPDATELOCKX(2), SPT_READUPDATEX(2), SPT_SETMODE(2),
SPT_UNLOCKFILE(2), SPT_UNLOCKREC(2), SPT_WRITEREADX(2),
SPT_WRITEUPDATEUNLOCKX(2), SPT_WRITEUPDATEX(2), SPT_WRITEX(2).
STANDARDS CONFORMANCE
This function is an extension to the UNIX 98 specification. Interfaces documented on this refer-
ence page conform to the following industry standards:
— IEEE Std 1003.1c-1995, POSIX System Application Program Interface
The use of the header file spthread.h is an HP exception to the POSIX standard.
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