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01df97080e
This creates more object files in the static library which reduces the size of statically linked files as only the relevant object files are included. In my experience, it reduced the size of the system initrd from 1.9 MiB to 1.6 MiB which is valuable.
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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read.cpp
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Reads from a file descriptor.
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*******************************************************************************/
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#include <libmaxsi/platform.h>
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#include <libmaxsi/syscall.h>
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#include <errno.h>
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#include <unistd.h>
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namespace Maxsi {
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DEFN_SYSCALL3(ssize_t, SysRead, SYSCALL_READ, int, void*, size_t);
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extern "C" ssize_t read(int fd, void* buf, size_t count)
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{
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retry:
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ssize_t result = SysRead(fd, buf, count);
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if ( result < 0 && errno == EAGAIN ) { goto retry; }
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return result;
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}
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extern "C" ssize_t pread(int, void*, size_t, off_t)
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{
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errno = ENOSYS;
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return -1;
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}
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} // namespace Maxsi
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