implement fexecve

2 files changed, 11 insertions, 0 deletions

diff --git a/include/unistd.h b/include/unistd.h
index c0994af4..f819429e 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -86,6 +86,7 @@ int execle(const char *, ...);
 int execl(const char *, ...);
 int execvp(const char *, char *const []);
 int execlp(const char *, ...);
+int fexecve(int, char *const [], char *const []);
 void _exit(int);
 
 pid_t getpid(void);
diff --git a/src/process/fexecve.c b/src/process/fexecve.c
new file mode 100644
index 00000000..3098645d
--- /dev/null
+++ b/src/process/fexecve.c
@@ -0,0 +1,10 @@
+#include <unistd.h>
+#include <stdio.h>
+
+int fexecve(int fd, char *const argv[], char *const envp[])
+{
+	static const char proc[] = "/proc/self/fd/%d";
+	char buf[sizeof proc + 3*sizeof(int)];
+	snprintf(buf, sizeof buf, proc, fd);
+	return execve(buf, argv, envp);
+}