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Make exe a symlink.

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This commit is contained in:
des 2000-05-24 07:37:02 +00:00
parent f84c12deda
commit f3c347774d
9 changed files with 136 additions and 47 deletions
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9
sys/compat/linprocfs/linprocfs.c
View File

@ -52,6 +52,7 @@
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <sys/vmmeter.h>
#include <sys/exec.h>
@ -80,6 +81,7 @@ linprocfs_domeminfo(curp, p, pfs, uio)
unsigned long swaptotal; /* total swap space in bytes */
unsigned long swapused; /* used swap space in bytes */
unsigned long swapfree; /* free swap space in bytes */
vm_object_t object;
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
@ -100,7 +102,12 @@ linprocfs_domeminfo(curp, p, pfs, uio)
swaptotal = swapblist->bl_blocks * 1024; /* XXX why 1024? */
swapfree = swapblist->bl_root->u.bmu_avail * PAGE_SIZE;
swapused = swaptotal - swapfree;
memshared = 0; /* XXX what's this supposed to be? */
memshared = 0;
for (object = TAILQ_FIRST(&vm_object_list); object != NULL;
object = TAILQ_NEXT(object, object_list))
if (object->shadow_count > 1)
memshared += object->resident_page_count;
memshared *= PAGE_SIZE;
/*
* We'd love to be able to write:
*

1
sys/compat/linprocfs/linprocfs.h
View File

@ -108,7 +108,6 @@ struct dbreg;
void linprocfs_exit __P((struct proc *));
int linprocfs_freevp __P((struct vnode *));
int linprocfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
struct vnode *linprocfs_findtextvp __P((struct proc *));
int linprocfs_sstep __P((struct proc *));
void linprocfs_fix_sstep __P((struct proc *));
#if 0

9
sys/compat/linprocfs/linprocfs_misc.c
View File

@ -52,6 +52,7 @@
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <sys/vmmeter.h>
#include <sys/exec.h>
@ -80,6 +81,7 @@ linprocfs_domeminfo(curp, p, pfs, uio)
unsigned long swaptotal; /* total swap space in bytes */
unsigned long swapused; /* used swap space in bytes */
unsigned long swapfree; /* free swap space in bytes */
vm_object_t object;
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
@ -100,7 +102,12 @@ linprocfs_domeminfo(curp, p, pfs, uio)
swaptotal = swapblist->bl_blocks * 1024; /* XXX why 1024? */
swapfree = swapblist->bl_root->u.bmu_avail * PAGE_SIZE;
swapused = swaptotal - swapfree;
memshared = 0; /* XXX what's this supposed to be? */
memshared = 0;
for (object = TAILQ_FIRST(&vm_object_list); object != NULL;
object = TAILQ_NEXT(object, object_list))
if (object->shadow_count > 1)
memshared += object->resident_page_count;
memshared *= PAGE_SIZE;
/*
* We'd love to be able to write:
*

6
sys/compat/linprocfs/linprocfs_subr.c
View File

@ -161,6 +161,12 @@ linprocfs_allocvp(mp, vpp, pid, pfs_type)
break;
case Pexe:
pfs->pfs_mode = (VREAD|VEXEC) |
(VREAD|VEXEC) >> 3 |
(VREAD|VEXEC) >> 6;
vp->v_type = VLNK;
break;
case Pmem:
pfs->pfs_mode = (VREAD|VWRITE) |
(VREAD) >> 3;;

71
sys/compat/linprocfs/linprocfs_vnops.c
View File

@ -55,6 +55,7 @@
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/malloc.h>
#include <machine/reg.h>
#include <vm/vm_zone.h>
#include <i386/linux/linprocfs/linprocfs.h>
@ -94,8 +95,8 @@ static struct proc_target {
/* name type validp */
{ DT_DIR, N("."), Pproc, NULL },
{ DT_DIR, N(".."), Proot, NULL },
{ DT_REG, N("exe"), Pexe, linprocfs_validfile },
{ DT_REG, N("mem"), Pmem, NULL },
{ DT_LNK, N("exe"), Pexe, NULL },
#undef N
};
static const int nproc_targets = sizeof(proc_targets) / sizeof(proc_targets[0]);
@ -513,9 +514,19 @@ linprocfs_getattr(ap)
vap->va_size = vap->va_bytes = DEV_BSIZE;
break;
case Pexe:
error = EOPNOTSUPP;
case Pexe: {
char *fullpath, *freepath;
error = textvp_fullpath(procp, &fullpath, &freepath);
if (error == 0) {
vap->va_size = strlen(fullpath);
free(freepath, M_TEMP);
} else {
vap->va_size = sizeof("unknown") - 1;
error = 0;
}
vap->va_bytes = vap->va_size;
break;
}
case Pmeminfo:
case Pcpuinfo:
@ -650,9 +661,7 @@ linprocfs_lookup(ap)
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
char *pname = cnp->cn_nameptr;
struct proc *curp = cnp->cn_proc;
struct proc_target *pt;
struct vnode *fvp;
pid_t pid;
struct pfsnode *pfs;
struct proc *p;
@ -710,15 +719,6 @@ linprocfs_lookup(ap)
break;
found:
if (pt->pt_pfstype == Pexe) {
fvp = procfs_findtextvp(p);
/* We already checked that it exists. */
VREF(fvp);
vn_lock(fvp, LK_EXCLUSIVE | LK_RETRY, curp);
*vpp = fvp;
return (0);
}
return (linprocfs_allocvp(dvp->v_mount, vpp, pfs->pfs_pid,
pt->pt_pfstype));
@ -916,21 +916,50 @@ linprocfs_readdir(ap)
}
/*
* readlink reads the link of `self'
* readlink reads the link of `self' or `exe'
*/
static int
linprocfs_readlink(ap)
struct vop_readlink_args *ap;
{
char buf[16]; /* should be enough */
int len;
struct proc *procp;
struct vnode *vp = ap->a_vp;
struct pfsnode *pfs = VTOPFS(vp);
char *fullpath, *freepath;
int error, len;
if (VTOPFS(ap->a_vp)->pfs_fileno != PROCFS_FILENO(0, Pself))
switch (pfs->pfs_type) {
case Pself:
if (pfs->pfs_fileno != PROCFS_FILENO(0, Pself))
return (EINVAL);
len = snprintf(buf, sizeof(buf), "%ld", (long)curproc->p_pid);
return (uiomove(buf, len, ap->a_uio));
/*
* There _should_ be no way for an entire process to disappear
* from under us...
*/
case Pexe:
procp = PFIND(pfs->pfs_pid);
if (procp == NULL || procp->p_cred == NULL ||
procp->p_ucred == NULL) {
printf("linprocfs_readlink: pid %d disappeared\n",
pfs->pfs_pid);
return (uiomove("unknown", sizeof("unknown") - 1,
ap->a_uio));
}
error = textvp_fullpath(procp, &fullpath, &freepath);
if (error != 0)
return (uiomove("unknown", sizeof("unknown") - 1,
ap->a_uio));
error = uiomove(fullpath, strlen(fullpath), ap->a_uio);
free(freepath, M_TEMP);
return (error);
default:
return (EINVAL);
len = snprintf(buf, sizeof(buf), "%ld", (long)curproc->p_pid);
return (uiomove((caddr_t)buf, len, ap->a_uio));
}
}
/*

1
sys/i386/linux/linprocfs/linprocfs.h
View File

@ -108,7 +108,6 @@ struct dbreg;
void linprocfs_exit __P((struct proc *));
int linprocfs_freevp __P((struct vnode *));
int linprocfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
struct vnode *linprocfs_findtextvp __P((struct proc *));
int linprocfs_sstep __P((struct proc *));
void linprocfs_fix_sstep __P((struct proc *));
#if 0

9
sys/i386/linux/linprocfs/linprocfs_misc.c
View File

@ -52,6 +52,7 @@
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <sys/vmmeter.h>
#include <sys/exec.h>
@ -80,6 +81,7 @@ linprocfs_domeminfo(curp, p, pfs, uio)
unsigned long swaptotal; /* total swap space in bytes */
unsigned long swapused; /* used swap space in bytes */
unsigned long swapfree; /* free swap space in bytes */
vm_object_t object;
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
@ -100,7 +102,12 @@ linprocfs_domeminfo(curp, p, pfs, uio)
swaptotal = swapblist->bl_blocks * 1024; /* XXX why 1024? */
swapfree = swapblist->bl_root->u.bmu_avail * PAGE_SIZE;
swapused = swaptotal - swapfree;
memshared = 0; /* XXX what's this supposed to be? */
memshared = 0;
for (object = TAILQ_FIRST(&vm_object_list); object != NULL;
object = TAILQ_NEXT(object, object_list))
if (object->shadow_count > 1)
memshared += object->resident_page_count;
memshared *= PAGE_SIZE;
/*
* We'd love to be able to write:
*

6
sys/i386/linux/linprocfs/linprocfs_subr.c
View File

@ -161,6 +161,12 @@ linprocfs_allocvp(mp, vpp, pid, pfs_type)
break;
case Pexe:
pfs->pfs_mode = (VREAD|VEXEC) |
(VREAD|VEXEC) >> 3 |
(VREAD|VEXEC) >> 6;
vp->v_type = VLNK;
break;
case Pmem:
pfs->pfs_mode = (VREAD|VWRITE) |
(VREAD) >> 3;;

71
sys/i386/linux/linprocfs/linprocfs_vnops.c
View File

@ -55,6 +55,7 @@
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/malloc.h>
#include <machine/reg.h>
#include <vm/vm_zone.h>
#include <i386/linux/linprocfs/linprocfs.h>
@ -94,8 +95,8 @@ static struct proc_target {
/* name type validp */
{ DT_DIR, N("."), Pproc, NULL },
{ DT_DIR, N(".."), Proot, NULL },
{ DT_REG, N("exe"), Pexe, linprocfs_validfile },
{ DT_REG, N("mem"), Pmem, NULL },
{ DT_LNK, N("exe"), Pexe, NULL },
#undef N
};
static const int nproc_targets = sizeof(proc_targets) / sizeof(proc_targets[0]);
@ -513,9 +514,19 @@ linprocfs_getattr(ap)
vap->va_size = vap->va_bytes = DEV_BSIZE;
break;
case Pexe:
error = EOPNOTSUPP;
case Pexe: {
char *fullpath, *freepath;
error = textvp_fullpath(procp, &fullpath, &freepath);
if (error == 0) {
vap->va_size = strlen(fullpath);
free(freepath, M_TEMP);
} else {
vap->va_size = sizeof("unknown") - 1;
error = 0;
}
vap->va_bytes = vap->va_size;
break;
}
case Pmeminfo:
case Pcpuinfo:
@ -650,9 +661,7 @@ linprocfs_lookup(ap)
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
char *pname = cnp->cn_nameptr;
struct proc *curp = cnp->cn_proc;
struct proc_target *pt;
struct vnode *fvp;
pid_t pid;
struct pfsnode *pfs;
struct proc *p;
@ -710,15 +719,6 @@ linprocfs_lookup(ap)
break;
found:
if (pt->pt_pfstype == Pexe) {
fvp = procfs_findtextvp(p);
/* We already checked that it exists. */
VREF(fvp);
vn_lock(fvp, LK_EXCLUSIVE | LK_RETRY, curp);
*vpp = fvp;
return (0);
}
return (linprocfs_allocvp(dvp->v_mount, vpp, pfs->pfs_pid,
pt->pt_pfstype));
@ -916,21 +916,50 @@ linprocfs_readdir(ap)
}
/*
* readlink reads the link of `self'
* readlink reads the link of `self' or `exe'
*/
static int
linprocfs_readlink(ap)
struct vop_readlink_args *ap;
{
char buf[16]; /* should be enough */
int len;
struct proc *procp;
struct vnode *vp = ap->a_vp;
struct pfsnode *pfs = VTOPFS(vp);
char *fullpath, *freepath;
int error, len;
if (VTOPFS(ap->a_vp)->pfs_fileno != PROCFS_FILENO(0, Pself))
switch (pfs->pfs_type) {
case Pself:
if (pfs->pfs_fileno != PROCFS_FILENO(0, Pself))
return (EINVAL);
len = snprintf(buf, sizeof(buf), "%ld", (long)curproc->p_pid);
return (uiomove(buf, len, ap->a_uio));
/*
* There _should_ be no way for an entire process to disappear
* from under us...
*/
case Pexe:
procp = PFIND(pfs->pfs_pid);
if (procp == NULL || procp->p_cred == NULL ||
procp->p_ucred == NULL) {
printf("linprocfs_readlink: pid %d disappeared\n",
pfs->pfs_pid);
return (uiomove("unknown", sizeof("unknown") - 1,
ap->a_uio));
}
error = textvp_fullpath(procp, &fullpath, &freepath);
if (error != 0)
return (uiomove("unknown", sizeof("unknown") - 1,
ap->a_uio));
error = uiomove(fullpath, strlen(fullpath), ap->a_uio);
free(freepath, M_TEMP);
return (error);
default:
return (EINVAL);
len = snprintf(buf, sizeof(buf), "%ld", (long)curproc->p_pid);
return (uiomove((caddr_t)buf, len, ap->a_uio));
}
}
/*