[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20260630200312.GX3520958@port70.net>
Date: Tue, 30 Jun 2026 22:03:12 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: Skye Soss <skye@...s.website>
Cc: musl <musl@...ts.openwall.com>
Subject: Re: [PATCH] add execveat syscall wrapper
* Skye Soss <skye@...s.website> [2026-06-30 14:39:37 -0500]:
> The execveat syscall was added to Linux in v4.0 (released in 2015),
added in 3.19 (released in 2015) see
linux commit 27d6ec7ad6f7a2a131ff8e9f77bcc6547e178d2c
> and the libc wrapper function was added to glibc in 2021
>
> The AT_EXECVEAT_CHECK option was added to Linux 6.14, so I believe the
it's spelled AT_EXECVE_CHECK
you should add it from linux uapi to musl fcntl.h
(AT_ is reserved namespace so no need for _GNU_SOURCE)
> syscall has the potential to become more widely used. Thus it is
> important for musl to provide the wrapper.
> ---
> include/unistd.h | 1 +
> src/process/execveat.c | 7 +++++++
> 2 files changed, 8 insertions(+)
> create mode 100644 src/process/execveat.c
>
> diff --git a/include/unistd.h b/include/unistd.h
> index 42b0e82b..a4bd6ddd 100644
> --- a/include/unistd.h
> +++ b/include/unistd.h
> @@ -95,6 +95,7 @@ int execvp(const char *, char *const []);
> int execlp(const char *, const char *, ...);
> int fexecve(int, char *const [], char *const []);
> _Noreturn void _exit(int);
> +int execveat(int, const char *, char *const [], char *const [], int);
should be under the _GNU_SOURCE section,
this is not a posix api.
>
> pid_t getpid(void);
> pid_t getppid(void);
> diff --git a/src/process/execveat.c b/src/process/execveat.c
> new file mode 100644
> index 00000000..a9d12877
> --- /dev/null
> +++ b/src/process/execveat.c
> @@ -0,0 +1,7 @@
> +#include <unistd.h>
> +#include "syscall.h"
> +
> +int execveat(int dirfd, const char *path, char *const argv[], char *const envp[], int flags)
> +{
> + return syscall(SYS_execveat, dirfd, path, argv, envp, flags);
> +}
> --
> 2.54.0
>
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
