Linux Standard Base Core Specification 4.0 | ||
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pread64() shall read count bytes into buf from the file associated with the open file descriptor fd, at the position specified by offset, without changing the file position.
pread64() is a large-file version of the pread() function as defined in ISO POSIX (2003). It differs from pread() in that the offset parameter is an off64_t instead of an off_t
On success, pread64() shall return the number
of bytes actually read. Otherwise pread64()
shall return -1 and
set errno
to indicate the error.
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