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include: add fexecve() for Android's Bionic
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
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Christian Brauner
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Feb 12, 2019
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/* liblxcapi | ||
* | ||
* Copyright © 2019 Christian Brauner <christian.brauner@ubuntu.com>. | ||
* Copyright © 2019 Canonical Ltd. | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* You should have received a copy of the GNU Lesser General Public License | ||
* along with this library; if not, write to the Free Software Foundation, | ||
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
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#ifndef _GNU_SOURCE | ||
#define _GNU_SOURCE 1 | ||
#endif | ||
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#include <errno.h> | ||
#include <stdio.h> | ||
#include <unistd.h> | ||
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#include "config.h" | ||
#include "macro.h" | ||
#include "raw_syscalls.h" | ||
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int fexecve(int fd, char *const argv[], char *const envp[]) | ||
{ | ||
char procfd[LXC_PROC_PID_FD_LEN]; | ||
int ret; | ||
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if (fd < 0 || !argv || !envp) { | ||
errno = EINVAL; | ||
return -1; | ||
} | ||
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#ifdef __NR_execveat | ||
lxc_raw_execveat(fd, "", argv, envp, AT_EMPTY_PATH); | ||
if (errno != ENOSYS) | ||
return -1; | ||
#endif | ||
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ret = snprintf(procfd, sizeof(procfd), "/proc/self/fd/%d", fd); | ||
if (ret < 0 || (size_t)ret >= sizeof(procfd)) { | ||
errno = ENAMETOOLONG; | ||
return -1; | ||
} | ||
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execve(procfd, argv, envp); | ||
return -1; | ||
} |
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/* liblxcapi | ||
* | ||
* Copyright © 2019 Christian Brauner <christian.brauner@ubuntu.com>. | ||
* Copyright © 2019 Canonical Ltd. | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* You should have received a copy of the GNU Lesser General Public License | ||
* along with this library; if not, write to the Free Software Foundation, | ||
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
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#ifndef _LXC_FEXECVE_H | ||
#define _LXC_FEXECVE_H | ||
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#include <stdio.h> | ||
extern int fexecve(int fd, char *const argv[], char *const envp[]); | ||
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#endif /* _LXC_FEXECVE_H */ |
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