34 lines
937 B
Diff
34 lines
937 B
Diff
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From e36f80cba6d5eefcc1ee664f16c2c72054b83134 Mon Sep 17 00:00:00 2001
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From: "Joseph C. Sible" <josephcsible@gmail.com>
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Date: Sun, 2 Sep 2018 13:42:26 -0400
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Subject: implement fexecve in terms of execveat when it exists
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This lets fexecve work even when /proc isn't mounted.
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---
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src/process/fexecve.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/process/fexecve.c b/src/process/fexecve.c
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index 6507b429..8be3f760 100644
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--- a/src/process/fexecve.c
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+++ b/src/process/fexecve.c
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@@ -1,10 +1,15 @@
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+#define _GNU_SOURCE
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#include <unistd.h>
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#include <errno.h>
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+#include <fcntl.h>
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+#include "syscall.h"
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void __procfdname(char *, unsigned);
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int fexecve(int fd, char *const argv[], char *const envp[])
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{
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+ int r = __syscall(SYS_execveat, fd, "", argv, envp, AT_EMPTY_PATH);
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+ if (r != -ENOSYS) return __syscall_ret(r);
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char buf[15 + 3*sizeof(int)];
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__procfdname(buf, fd);
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execve(buf, argv, envp);
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--
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cgit v1.2.1
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