mirror of
https://github.com/trapexit/mergerfs.git
synced 2024-12-02 05:23:41 +08:00
86 lines
1.9 KiB
C++
86 lines
1.9 KiB
C++
/*
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Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "fs_fstat.hpp"
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#include "fs_copydata.hpp"
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#include "fs_attr.hpp"
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#include "fs_xattr.hpp"
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#include "fs_fchown.hpp"
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#include "fs_fchmod.hpp"
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#include "fs_futimens.hpp"
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namespace l
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{
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static
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bool
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ignorable_error(const int err_)
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{
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switch(err_)
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{
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case ENOTTY:
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case ENOTSUP:
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#if ENOTSUP != EOPNOTSUPP
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case EOPNOTSUPP:
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#endif
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return true;
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}
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return false;
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}
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}
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namespace fs
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{
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int
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clonefile(const int src_fd_,
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const int dst_fd_)
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{
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int rv;
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struct stat src_st;
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rv = fs::fstat(src_fd_,&src_st);
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if(rv == -1)
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return -1;
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rv = fs::copydata(src_fd_,dst_fd_,src_st.st_size);
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if(rv == -1)
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return -1;
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rv = fs::attr::copy(src_fd_,dst_fd_);
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if((rv == -1) && !l::ignorable_error(errno))
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return -1;
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rv = fs::xattr::copy(src_fd_,dst_fd_);
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if((rv == -1) && !l::ignorable_error(errno))
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return -1;
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rv = fs::fchown_check_on_error(dst_fd_,src_st);
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if(rv == -1)
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return -1;
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rv = fs::fchmod_check_on_error(dst_fd_,src_st);
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if(rv == -1)
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return -1;
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rv = fs::futimens(dst_fd_,src_st);
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if(rv == -1)
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return -1;
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return 0;
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}
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}
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