mirror of
https://github.com/trapexit/mergerfs.git
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59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*
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The MIT License (MIT)
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Copyright (c) 2014 Antonio SJ Musumeci <trapexit@spawn.link>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/unistd.h>
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namespace mergerfs
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{
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namespace ugid
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{
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struct SetResetGuard
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{
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SetResetGuard(const uid_t _newuid,
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const gid_t _newgid)
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{
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olduid = ::geteuid();
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oldgid = ::getegid();
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newuid = _newuid;
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newgid = _newgid;
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if(newgid != oldgid || newuid != olduid)
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pthread_setugid_np(newuid,newgid);
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}
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~SetResetGuard()
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{
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if(newgid != oldgid || newuid != olduid)
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pthread_setugid_np(newuid,newgid);
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}
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uid_t olduid;
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gid_t oldgid;
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uid_t newuid;
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gid_t newgid;
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};
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}
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}
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