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[PATCH v5 14/28] bsd-user: Implement getrlimit(2) and setrlimit(2)
From: |
Karim Taha |
Subject: |
[PATCH v5 14/28] bsd-user: Implement getrlimit(2) and setrlimit(2) |
Date: |
Mon, 25 Sep 2023 21:24:11 +0300 |
From: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
---
bsd-user/bsd-proc.h | 59 +++++++++++++++++++++++++++++++++++
bsd-user/freebsd/os-syscall.c | 8 +++++
2 files changed, 67 insertions(+)
diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h
index 133c1b0eaf..38d1324034 100644
--- a/bsd-user/bsd-proc.h
+++ b/bsd-user/bsd-proc.h
@@ -137,4 +137,63 @@ static inline abi_long do_bsd_getrusage(abi_long who,
abi_ulong target_addr)
return ret;
}
+/* getrlimit(2) */
+static inline abi_long do_bsd_getrlimit(abi_long arg1, abi_ulong arg2)
+{
+ abi_long ret;
+ int resource = target_to_host_resource(arg1);
+ struct target_rlimit *target_rlim;
+ struct rlimit rlim;
+
+ switch (resource) {
+ case RLIMIT_STACK:
+ rlim.rlim_cur = target_dflssiz;
+ rlim.rlim_max = target_maxssiz;
+ ret = 0;
+ break;
+
+ case RLIMIT_DATA:
+ rlim.rlim_cur = target_dfldsiz;
+ rlim.rlim_max = target_maxdsiz;
+ ret = 0;
+ break;
+
+ default:
+ ret = get_errno(getrlimit(resource, &rlim));
+ break;
+ }
+ if (!is_error(ret)) {
+ if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) {
+ return -TARGET_EFAULT;
+ }
+ target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
+ target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
+ unlock_user_struct(target_rlim, arg2, 1);
+ }
+ return ret;
+}
+
+/* setrlimit(2) */
+static inline abi_long do_bsd_setrlimit(abi_long arg1, abi_ulong arg2)
+{
+ abi_long ret;
+ int resource = target_to_host_resource(arg1);
+ struct target_rlimit *target_rlim;
+ struct rlimit rlim;
+
+ if (RLIMIT_STACK == resource) {
+ /* XXX We should, maybe, allow the stack size to shrink */
+ ret = -TARGET_EPERM;
+ } else {
+ if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) {
+ return -TARGET_EFAULT;
+ }
+ rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
+ rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
+ unlock_user_struct(target_rlim, arg2, 0);
+ ret = get_errno(setrlimit(resource, &rlim));
+ }
+ return ret;
+}
+
#endif /* !BSD_PROC_H_ */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 5d8693ed55..5cb6086230 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -247,6 +247,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
ret = do_bsd_getrusage(arg1, arg2);
break;
+ case TARGET_FREEBSD_NR_getrlimit: /* getrlimit(2) */
+ ret = do_bsd_getrlimit(arg1, arg2);
+ break;
+
+ case TARGET_FREEBSD_NR_setrlimit: /* setrlimit(2) */
+ ret = do_bsd_setrlimit(arg1, arg2);
+ break;
+
/*
* File system calls.
--
2.42.0
- [PATCH v5 03/28] bsd-user: Implement host_to_target_siginfo., (continued)
- [PATCH v5 03/28] bsd-user: Implement host_to_target_siginfo., Karim Taha, 2023/09/25
- [PATCH v5 05/28] bsd-user: add extern declarations for bsd-proc.c conversion functions, Karim Taha, 2023/09/25
- [PATCH v5 06/28] bsd-user: Implement target_to_host_resource conversion function, Karim Taha, 2023/09/25
- [PATCH v5 04/28] bsd-user: Add freebsd_exec_common and do_freebsd_procctl to qemu.h., Karim Taha, 2023/09/25
- [PATCH v5 07/28] bsd-user: Implement target_to_host_rlim and host_to_target_rlim conversion., Karim Taha, 2023/09/25
- [PATCH v5 08/28] bsd-user: Implement host_to_target_rusage and host_to_target_wrusage., Karim Taha, 2023/09/25
- [PATCH v5 09/28] bsd-user: Implement host_to_target_waitstatus conversion., Karim Taha, 2023/09/25
- [PATCH v5 10/28] bsd-user: Get number of cpus., Karim Taha, 2023/09/25
- [PATCH v5 11/28] bsd-user: Implement getgroups(2) and setgroups(2) system calls., Karim Taha, 2023/09/25
- [PATCH v5 12/28] bsd-user: Implement umask(2), setlogin(2) and getlogin(2), Karim Taha, 2023/09/25
- [PATCH v5 14/28] bsd-user: Implement getrlimit(2) and setrlimit(2),
Karim Taha <=
- [PATCH v5 15/28] bsd-user: Implement several get/set system calls:, Karim Taha, 2023/09/25
- [PATCH v5 13/28] bsd-user: Implement getrusage(2)., Karim Taha, 2023/09/25
- [PATCH v5 16/28] bsd-user: Implement get/set[resuid/resgid/sid] and issetugid., Karim Taha, 2023/09/25
- [PATCH v5 17/28] bsd-user: Add stubs for profil(2), ktrace(2), utrace(2) and ptrace(2)., Karim Taha, 2023/09/25
- [PATCH v5 18/28] bsd-user: Implement getpriority(2) and setpriority(2)., Karim Taha, 2023/09/25
- [PATCH v5 19/28] bsd-user: Implement get_filename_from_fd., Karim Taha, 2023/09/25
- [PATCH v5 20/28] bsd-user: Implement freebsd_exec_common, used in implementing execve/fexecve., Karim Taha, 2023/09/25
- [PATCH v5 22/28] bsd-user: Implement execve(2) and fexecve(2) system calls., Karim Taha, 2023/09/25
- [PATCH v5 23/28] bsd-user: Implement wait4(2) and wait6(2) system calls., Karim Taha, 2023/09/25
- [PATCH v5 21/28] bsd-user: Implement procctl(2) along with necessary conversion functions., Karim Taha, 2023/09/25