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19d83270fc
It operates similar to execve and it is is already used to implement fexecve without requiring /proc to be mounted. However, different than fexecve, if the syscall is not supported by the kernel an error is returned instead of trying a fallback. Checked on x86_64-linux-gnu and powerpc64le-linux-gnu. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* Execute program relative to a directory file descriptor.
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stddef.h>
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#include <unistd.h>
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/* Replace the current process, executing PATH relative to difrd with
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arguments argv and environment envp.
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argv and envp are terminated by NULL pointers. */
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int
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__execveat (int dirfd, const char *path, char *const argv[], char *const envp[],
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int flags)
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{
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if (path == NULL || argv == NULL || envp == NULL)
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{
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__set_errno (EINVAL);
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return -1;
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}
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__set_errno (ENOSYS);
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return -1;
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}
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stub_warning (execveat)
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weak_alias (__execveat, execveat)
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