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3759674047
Let's move raise_rlim_nofile() from 'fd' compilation unit to 'limits', as it wraps setrlimit to change process RLIMIT_NOFILE.
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* Handlers for process resources limits.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later.
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*
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*/
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#include <haproxy/compat.h>
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#include <haproxy/global.h>
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#include <haproxy/limits.h>
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#include <haproxy/proxy.h>
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/* Sets the RLIMIT_NOFILE setting to <new_limit> and returns the previous one
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* in <old_limit> if the pointer is not NULL, even if set_rlimit() fails. The
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* two pointers may point to the same variable as the copy happens after
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* setting the new value. The value is only changed if at least one of the new
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* limits is strictly higher than the current one, otherwise returns 0 without
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* changing anything. The getrlimit() or setrlimit() syscall return value is
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* returned and errno is preserved.
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*/
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int raise_rlim_nofile(struct rlimit *old_limit, struct rlimit *new_limit)
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{
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struct rlimit limit = { };
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int ret = 0;
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ret = getrlimit(RLIMIT_NOFILE, &limit);
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if (ret == 0 &&
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(limit.rlim_max < new_limit->rlim_max ||
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limit.rlim_cur < new_limit->rlim_cur)) {
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ret = setrlimit(RLIMIT_NOFILE, new_limit);
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}
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if (old_limit)
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*old_limit = limit;
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return ret;
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}
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