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* Copyright (c) 2018 Rob Clark <robdclark@gmail.com>
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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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
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* THE 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 THE
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#include <sys/types.h>
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static pid_t pager_pid;
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fprintf(stderr, "Failed to create pager pipe: %m\n");
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fprintf(stderr, "Failed to fork pager: %m\n");
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const char *less_opts;
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dup2(fd[0], STDIN_FILENO);
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setenv("LESS", less_opts, 1);
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execlp("less", "less", NULL);
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/* we want to kill the parent process when pager exits: */
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signal(SIGCHLD, pager_death);
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dup2(fd[1], STDOUT_FILENO);
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memset(&status, 0, sizeof(status));
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if (waitid(P_PID, pager_pid, &status, WEXITED) < 0) {