Wrap mprotect(2) so that we can add execute permissions when read

permissions are requested. This is needed on amd64 and ia64 for
JDK 1.4.x

6 files changed, 32 insertions, 10 deletions

diff --git a/sys/compat/freebsd32/freebsd32_misc.c b/sys/compat/freebsd32/freebsd32_misc.c
index ae80ef2..feb4d81 100644
--- a/sys/compat/freebsd32/freebsd32_misc.c
+++ b/sys/compat/freebsd32/freebsd32_misc.c
@@ -437,6 +437,21 @@ freebsd32_mmap_partial(struct thread *td, vm_offset_t start, vm_offset_t end,
 #endif
 
 int
+freebsd32_mprotect(struct thread *td, struct freebsd32_mprotect_args *uap)
+{
+	struct mprotect_args ap;
+
+	ap.addr = (void *)(uintptr_t)uap->addr;
+	ap.len = uap->len;
+	ap.prot = uap->prot;
+#if defined(__amd64__) || defined(__ia64__)
+	if (ap.prot & PROT_READ)
+		ap.prot |= PROT_EXEC;
+#endif
+	return (sys_mprotect(td, &ap));
+}
+
+int
 freebsd32_mmap(struct thread *td, struct freebsd32_mmap_args *uap)
 {
 	struct mmap_args ap;
diff --git a/sys/compat/freebsd32/freebsd32_proto.h b/sys/compat/freebsd32/freebsd32_proto.h
index 335f64c..3fce6d8 100644
--- a/sys/compat/freebsd32/freebsd32_proto.h
+++ b/sys/compat/freebsd32/freebsd32_proto.h
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 224066 2011-07-15 18:26:19Z jonathan 
+ * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 226348 2011-10-13 18:21:11Z marcel 
  */
 
 #ifndef _FREEBSD32_SYSPROTO_H_
@@ -76,6 +76,11 @@ struct freebsd32_execve_args {
 	char argv_l_[PADL_(u_int32_t *)]; u_int32_t * argv; char argv_r_[PADR_(u_int32_t *)];
 	char envv_l_[PADL_(u_int32_t *)]; u_int32_t * envv; char envv_r_[PADR_(u_int32_t *)];
 };
+struct freebsd32_mprotect_args {
+	char addr_l_[PADL_(const void *)]; const void * addr; char addr_r_[PADR_(const void *)];
+	char len_l_[PADL_(size_t)]; size_t len; char len_r_[PADR_(size_t)];
+	char prot_l_[PADL_(int)]; int prot; char prot_r_[PADR_(int)];
+};
 struct freebsd32_setitimer_args {
 	char which_l_[PADL_(u_int)]; u_int which; char which_r_[PADR_(u_int)];
 	char itv_l_[PADL_(struct itimerval32 *)]; struct itimerval32 * itv; char itv_r_[PADR_(struct itimerval32 *)];
@@ -585,6 +590,7 @@ int	freebsd32_recvfrom(struct thread *, struct freebsd32_recvfrom_args *);
 int	freebsd32_sigaltstack(struct thread *, struct freebsd32_sigaltstack_args *);
 int	freebsd32_ioctl(struct thread *, struct freebsd32_ioctl_args *);
 int	freebsd32_execve(struct thread *, struct freebsd32_execve_args *);
+int	freebsd32_mprotect(struct thread *, struct freebsd32_mprotect_args *);
 int	freebsd32_setitimer(struct thread *, struct freebsd32_setitimer_args *);
 int	freebsd32_getitimer(struct thread *, struct freebsd32_getitimer_args *);
 int	freebsd32_select(struct thread *, struct freebsd32_select_args *);
@@ -943,6 +949,7 @@ int	freebsd7_freebsd32_shmctl(struct thread *, struct freebsd7_freebsd32_shmctl_
 #define	FREEBSD32_SYS_AUE_freebsd32_execve	AUE_EXECVE
 #define	FREEBSD32_SYS_AUE_ofreebsd32_fstat	AUE_FSTAT
 #define	FREEBSD32_SYS_AUE_ofreebsd32_getpagesize	AUE_NULL
+#define	FREEBSD32_SYS_AUE_freebsd32_mprotect	AUE_MPROTECT
 #define	FREEBSD32_SYS_AUE_freebsd32_setitimer	AUE_SETITIMER
 #define	FREEBSD32_SYS_AUE_freebsd32_getitimer	AUE_GETITIMER
 #define	FREEBSD32_SYS_AUE_freebsd32_select	AUE_SELECT
diff --git a/sys/compat/freebsd32/freebsd32_syscall.h b/sys/compat/freebsd32/freebsd32_syscall.h
index b74f38f..c0e2ed2 100644
--- a/sys/compat/freebsd32/freebsd32_syscall.h
+++ b/sys/compat/freebsd32/freebsd32_syscall.h
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 224066 2011-07-15 18:26:19Z jonathan 
+ * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 226348 2011-10-13 18:21:11Z marcel 
  */
 
 #define	FREEBSD32_SYS_syscall	0
@@ -80,7 +80,7 @@
 				/* 71 is obsolete ommap */
 #define	FREEBSD32_SYS_vadvise	72
 #define	FREEBSD32_SYS_munmap	73
-#define	FREEBSD32_SYS_mprotect	74
+#define	FREEBSD32_SYS_freebsd32_mprotect	74
 #define	FREEBSD32_SYS_madvise	75
 				/* 76 is obsolete vhangup */
 				/* 77 is obsolete vlimit */
diff --git a/sys/compat/freebsd32/freebsd32_syscalls.c b/sys/compat/freebsd32/freebsd32_syscalls.c
index 4411943..d5ed1c5 100644
--- a/sys/compat/freebsd32/freebsd32_syscalls.c
+++ b/sys/compat/freebsd32/freebsd32_syscalls.c
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 224066 2011-07-15 18:26:19Z jonathan 
+ * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 226348 2011-10-13 18:21:11Z marcel 
  */
 
 const char *freebsd32_syscallnames[] = {
@@ -84,7 +84,7 @@ const char *freebsd32_syscallnames[] = {
 	"obs_ommap",			/* 71 = obsolete ommap */
 	"vadvise",			/* 72 = vadvise */
 	"munmap",			/* 73 = munmap */
-	"mprotect",			/* 74 = mprotect */
+	"freebsd32_mprotect",			/* 74 = freebsd32_mprotect */
 	"madvise",			/* 75 = madvise */
 	"obs_vhangup",			/* 76 = obsolete vhangup */
 	"obs_vlimit",			/* 77 = obsolete vlimit */
diff --git a/sys/compat/freebsd32/freebsd32_sysent.c b/sys/compat/freebsd32/freebsd32_sysent.c
index 426ecb1..43297e1 100644
--- a/sys/compat/freebsd32/freebsd32_sysent.c
+++ b/sys/compat/freebsd32/freebsd32_sysent.c
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 224066 2011-07-15 18:26:19Z jonathan 
+ * created from FreeBSD: head/sys/compat/freebsd32/syscalls.master 226348 2011-10-13 18:21:11Z marcel 
  */
 
 #include "opt_compat.h"
@@ -121,7 +121,7 @@ struct sysent freebsd32_sysent[] = {
 	{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },			/* 71 = obsolete ommap */
 	{ AS(ovadvise_args), (sy_call_t *)sys_ovadvise, AUE_O_VADVISE, NULL, 0, 0, 0, SY_THR_STATIC },	/* 72 = vadvise */
 	{ AS(munmap_args), (sy_call_t *)sys_munmap, AUE_MUNMAP, NULL, 0, 0, 0, SY_THR_STATIC },	/* 73 = munmap */
-	{ AS(mprotect_args), (sy_call_t *)sys_mprotect, AUE_MPROTECT, NULL, 0, 0, 0, SY_THR_STATIC },	/* 74 = mprotect */
+	{ AS(freebsd32_mprotect_args), (sy_call_t *)freebsd32_mprotect, AUE_MPROTECT, NULL, 0, 0, 0, SY_THR_STATIC },	/* 74 = freebsd32_mprotect */
 	{ AS(madvise_args), (sy_call_t *)sys_madvise, AUE_MADVISE, NULL, 0, 0, 0, SY_THR_STATIC },	/* 75 = madvise */
 	{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },			/* 76 = obsolete vhangup */
 	{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },			/* 77 = obsolete vlimit */
diff --git a/sys/compat/freebsd32/freebsd32_systrace_args.c b/sys/compat/freebsd32/freebsd32_systrace_args.c
index 39b66fd..11959e9 100644
--- a/sys/compat/freebsd32/freebsd32_systrace_args.c
+++ b/sys/compat/freebsd32/freebsd32_systrace_args.c
@@ -464,9 +464,9 @@ systrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)
 		*n_args = 2;
 		break;
 	}
-	/* mprotect */
+	/* freebsd32_mprotect */
 	case 74: {
-		struct mprotect_args *p = params;
+		struct freebsd32_mprotect_args *p = params;
 		uarg[0] = (intptr_t) p->addr; /* const void * */
 		uarg[1] = p->len; /* size_t */
 		iarg[2] = p->prot; /* int */
@@ -3737,7 +3737,7 @@ systrace_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)
 			break;
 		};
 		break;
-	/* mprotect */
+	/* freebsd32_mprotect */
 	case 74:
 		switch(ndx) {
 		case 0: