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Add an execve command for kse_thr_interrupt to allow libpthread to

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restore signal mask correctly, this is required by POSIX.

Reviewed by: deischen
This commit is contained in:
David Xu 2004-10-07 13:50:10 +00:00
parent f6b2c4eca5
commit 84e0b075f6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=136221
4 changed files with 32 additions and 3 deletions
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5
sys/kern/kern_exec.c
View File

@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
#include <sys/pioctl.h>
#include <sys/namei.h>
#include <sys/sf_buf.h>
#include <sys/syscallsubr.h>
#include <sys/sysent.h>
#include <sys/shm.h>
#include <sys/sysctl.h>
@ -78,8 +79,6 @@ MALLOC_DEFINE(M_PARGS, "proc-args", "Process arguments");
static int sysctl_kern_ps_strings(SYSCTL_HANDLER_ARGS);
static int sysctl_kern_usrstack(SYSCTL_HANDLER_ARGS);
static int sysctl_kern_stackprot(SYSCTL_HANDLER_ARGS);
static int kern_execve(struct thread *td, char *fname, char **argv,
char **envv, struct mac *mac_p);
static int do_execve(struct thread *td, char *fname, char **argv,
char **envv, struct mac *mac_p);
@ -207,7 +206,7 @@ __mac_execve(td, uap)
#endif
}
static int
int
kern_execve(td, fname, argv, envv, mac_p)
struct thread *td;
char *fname;

17
sys/kern/kern_kse.c
View File

@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
#include <sys/proc.h>
#include <sys/ptrace.h>
#include <sys/smp.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/sched.h>
#include <sys/signalvar.h>
@ -176,11 +177,13 @@ struct kse_thr_interrupt_args {
int
kse_thr_interrupt(struct thread *td, struct kse_thr_interrupt_args *uap)
{
struct kse_execve_args args;
struct proc *p;
struct thread *td2;
struct kse_upcall *ku;
struct kse_thr_mailbox *tmbx;
uint32_t flags;
int error;
p = td->td_proc;
@ -256,6 +259,20 @@ kse_thr_interrupt(struct thread *td, struct kse_thr_interrupt_args *uap)
}
return (0);
case KSE_INTR_EXECVE:
error = copyin((void *)uap->data, &args, sizeof(args));
if (error)
return (error);
error = kern_execve(td, args.path, args.argv, args.envp, NULL);
if (error == 0) {
PROC_LOCK(p);
SIGSETOR(td->td_siglist, args.sigpend);
PROC_UNLOCK(p);
kern_sigprocmask(td, SIG_SETMASK, &args.sigmask, NULL,
0);
}
return (error);
default:
return (EINVAL);
}

10
sys/sys/kse.h
View File

@ -112,6 +112,16 @@ struct kse_mailbox {
#define KSE_INTR_SENDSIG 3
#define KSE_INTR_SIGEXIT 4
#define KSE_INTR_DBSUSPEND 5
#define KSE_INTR_EXECVE 6
struct kse_execve_args {
sigset_t sigmask;
sigset_t sigpend;
char *path;
char **argv;
char **envp;
void *reserved;
};
#ifndef _KERNEL
int kse_create(struct kse_mailbox *, int);

3
sys/sys/syscallsubr.h
View File

@ -31,6 +31,7 @@
#include <sys/signal.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/mac.h>
struct mbuf;
struct msghdr;
@ -98,6 +99,8 @@ int kern_truncate(struct thread *td, char *path, enum uio_seg pathseg,
int kern_unlink(struct thread *td, char *path, enum uio_seg pathseg);
int kern_utimes(struct thread *td, char *path, enum uio_seg pathseg,
struct timeval *tptr, enum uio_seg tptrseg);
int kern_execve(struct thread *td, char *fname, char **argv, char **envv,
struct mac *mac_p);
/* flags for kern_sigaction */
#define KSA_OSIGSET 0x0001 /* uses osigact_t */