Lines Matching +full:read +full:- +full:1

7 .\" 1. Redistributions of source code must retain the above copyright
28 .Dd March 1, 2024
32 .Nm read ,
36 .Nd read input
42 .Fn read "int fd" "void *buf" "size_t nbytes"
52 .Fn read
54 attempts to read
68 array: iov[0], iov[1], ..., iov[iovcnt\|\-\|1].
74 perform the same functions, but read from the specified position in
85 .Bd -literal -offset indent -compact
103 .Fn read
110 .Fn read ,
111 the pointer is incremented by the number of bytes actually read.
113 Objects that are not capable of seeking always read from the current
119 .Fn read ,
124 return the number of bytes actually read and placed in the buffer.
125 The system guarantees to read the number of bytes requested if
127 before the end-of-file, but in no other case.
130 .St -p1003.1-2004 ,
132 .Fn read
138 .Fn read
149 number of bytes actually read is returned.
150 Upon reading end-of-file,
152 Otherwise, a -1 is returned and the global variable
157 .Fn read ,
164 .Bl -tag -width Er
185 Failed to read from a file, e.g. /proc/<pid>/regs while <pid> is not stopped
187 A read from a slow device
196 The file was marked for non-blocking I/O,
197 and no data were ready to be read.
200 Directories may only be read directly by root if the filesystem supports it and
203 sysctl MIB is set to a non-zero value.
209 do not allow regular read operations on it.
215 is before the end-of-file, and
228 is non-zero).
236 .Bl -tag -width Er
260 is non-zero).
272 .Bl -tag -width Er
294 .Fn read
296 .St -p1003.1-90 .
302 .St -xpg4.2 .
317 .Fn read