HP-UX Reference (11i v1 00/12) - 2 System Calls (vol 5)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man2/!!!intro.2
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w
write(2) write(2)
Issue 4
The following changes are incorporated for alignment with the ISO POSIX-1 standard:
• The type of the argument buf is changed from char * to const void*, and the type of the argument
byte is changed from unsigned size_t.
• The DESCRIPTION section is changed:
- to indicate that writing at end-of-file is atomic
- to identify that {SSIZE_MAX} is now used to determine the maximum value of nbyte
- to indicate the consequences of activities after a call to the write() function
- To improve clarity, the text describing operations on pipes or FIFOs when O_NONBLOCK is set
is restructured.
Other changes are incorporated as follows:
• The header <unistd.h> is added to the SYNOPSIS section.
• Reference to ulimit in the DESCRIPTION section is marked as an extension.
• Reference to the process’ file size limit and the
ulimit() function are marked as extensions in
the description of the
EFBIG error.
• The ENXIO error is marked as an extension.
• The APPLICATION USAGE section is removed.
• The description of EINTR is amended.
Issue 4, Version 2
The following changes are incorporated for X/OPEN UNIX conformance:
• The writev() function is added to the SYNOPSIS.
• The DESCRIPTION is updated to describe the reading of data from STREAMS files, an operational
description of the writev() function is included, and a statement is added indicating that
SIGXFSZ will be generated if an attempted write operation would cause the maximum file size to
be exceeded.
• The RETURN VALUE section is updated to describe values returned by the
writev() function.
• The ERRORS section has been restructured to describe errors that apply to both
write() and
writev() apart from those that apply to
writev() specifically. The EIO, ERANGE, and EINVAL
errors are also added.
HP-UX Release 11i: December 2000 − 4 − Section 2−−461
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