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

System Functions (w) write(2)
RELATED INFORMATION
Functions: creat(2), fcntl(2), lseek(2), open(2), pipe(2), socket(2), ulimit(3).
STANDARDS CONFORMANCE
The HP implementation does not generate the
SIGXFSZ signal.
The POSIX standards leave some features to the implementing vendor to define. These features
are affected in the HP implementation:
• Calls to the write() function with the nbytes parameter equal to 0 are supported for all
regular and nonregular files.
• After reading from a device that is incapable of seeking, the value of the file pointer is
always 0 (zero).
• Specifying a value for the nbytes parameter that is greater than SSIZE_MAX causes the
write() function to return -1 and set errno to [EINVAL].
• errno can be set to [EIO] if a physical I/O error occurs.
HP extensions to the XPG4 Version 2 specification are:
• The errno values [ECONNRESET], [EFAULT], [EGUARDIANLOCKED], [EINVAL],
[ENETDOWN], [ENOTCONN], [ETIMEDOUT], and [EWRONGID] can be returned.
527186-005 Hewlett-Packard Company 10−17