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| author | Laurent Vivier | 2022-09-27 14:43:56 +0200 |
|---|---|---|
| committer | Laurent Vivier | 2022-10-21 17:46:19 +0200 |
| commit | f07eb1c4f805c0dcc14dd69fee49b601ce0b2d2c (patch) | |
| tree | b14eada29e2a65b574b6294c1f1c42543c4a9713 | |
| parent | linux-user: fix pidfd_send_signal() (diff) | |
| download | qemu-f07eb1c4f805c0dcc14dd69fee49b601ce0b2d2c.tar.gz qemu-f07eb1c4f805c0dcc14dd69fee49b601ce0b2d2c.tar.xz qemu-f07eb1c4f805c0dcc14dd69fee49b601ce0b2d2c.zip | |
linux-user: handle /proc/self/exe with execve() syscall
If path is /proc/self/exe, use the executable path
provided by exec_path.
Don't use execfd as it is closed by loader_exec() and otherwise
will survive to the exec() syscall and be usable child process.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220927124357.688536-2-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
| -rw-r--r-- | linux-user/syscall.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index ad06ec7bd5..a7a29091c9 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8860,7 +8860,11 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, * before the execve completes and makes it the other * program's problem. */ - ret = get_errno(safe_execve(p, argp, envp)); + if (is_proc_myself(p, "exe")) { + ret = get_errno(safe_execve(exec_path, argp, envp)); + } else { + ret = get_errno(safe_execve(p, argp, envp)); + } unlock_user(p, arg1, 0); goto execve_end; |