diff options
| author | Ian Moffett <ian@osmora.org> | 2025-07-09 01:07:03 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-07-09 01:07:39 -0400 |
| commit | 524b56b5e28875b48613b812be92476573bb8325 (patch) | |
| tree | 6064c42485aabc5e5400ab0218fd30dc736eb4bc | |
| parent | ee2e8661148b7e9fe1413a714fdf8779f867afc0 (diff) | |
kernel: cred: Introduce SYS_setuid syscall
Signed-off-by: Ian Moffett <ian@osmora.org>
| -rw-r--r-- | sys/include/sys/syscall.h | 1 | ||||
| -rw-r--r-- | sys/include/sys/ucred.h | 5 | ||||
| -rw-r--r-- | sys/kern/kern_cred.c | 11 | ||||
| -rw-r--r-- | sys/kern/kern_syscall.c | 4 |
4 files changed, 20 insertions, 1 deletions
diff --git a/sys/include/sys/syscall.h b/sys/include/sys/syscall.h index 3650e7a..05288f4 100644 --- a/sys/include/sys/syscall.h +++ b/sys/include/sys/syscall.h @@ -56,6 +56,7 @@ #define SYS_inject 15 #define SYS_getpid 16 #define SYS_getppid 17 +#define SYS_setuid 18 #if defined(_KERNEL) /* Syscall return value and arg type */ diff --git a/sys/include/sys/ucred.h b/sys/include/sys/ucred.h index ef66a18..b44a7fe 100644 --- a/sys/include/sys/ucred.h +++ b/sys/include/sys/ucred.h @@ -33,6 +33,7 @@ #include <sys/types.h> #if defined(_KERNEL) #include <sys/spinlock.h> +#include <sys/syscall.h> #endif /* @@ -47,4 +48,8 @@ struct ucred { }; int setuid(uid_t new); + +#if defined(_KERNEL) +scret_t sys_setuid(struct syscall_args *scargs); +#endif #endif /* !_SYS_UCRED_H_ */ diff --git a/sys/kern/kern_cred.c b/sys/kern/kern_cred.c index 828ba3b..e1202fc 100644 --- a/sys/kern/kern_cred.c +++ b/sys/kern/kern_cred.c @@ -55,3 +55,14 @@ setuid(uid_t new) spinlock_release(&cur_cred->lock); return 0; } + +/* + * setuid() syscall + * + * arg0: `new' + */ +scret_t +sys_setuid(struct syscall_args *scargs) +{ + return setuid(scargs->arg0); +} diff --git a/sys/kern/kern_syscall.c b/sys/kern/kern_syscall.c index 739dd7f..276c7c7 100644 --- a/sys/kern/kern_syscall.c +++ b/sys/kern/kern_syscall.c @@ -31,6 +31,7 @@ #include <sys/sysctl.h> #include <sys/reboot.h> #include <sys/types.h> +#include <sys/ucred.h> #include <sys/time.h> #include <sys/mman.h> #include <sys/proc.h> @@ -55,7 +56,8 @@ scret_t(*g_sctab[])(struct syscall_args *) = { sys_sleep, /* SYS_sleep */ sys_inject, /* SYS_inject */ sys_getpid, /* SYS_getpid */ - sys_getppid /* SYS_getppid */ + sys_getppid, /* SYS_getppid */ + sys_setuid, /* SYS_setuid */ }; const size_t MAX_SYSCALLS = NELEM(g_sctab); |