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procfs.c (113617) procfs.c (123247)
1/*
2 * Copyright (c) 2001 Dag-Erling Sm�rgrav
3 * Copyright (c) 1993 Jan-Simon Pendry
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Jan-Simon Pendry.

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32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)procfs_vfsops.c 8.7 (Berkeley) 5/10/95
39 *
1/*
2 * Copyright (c) 2001 Dag-Erling Sm�rgrav
3 * Copyright (c) 1993 Jan-Simon Pendry
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Jan-Simon Pendry.

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32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)procfs_vfsops.c 8.7 (Berkeley) 5/10/95
39 *
40 * $FreeBSD: head/sys/fs/procfs/procfs.c 113617 2003-04-17 22:12:12Z jhb $
40 * $FreeBSD: head/sys/fs/procfs/procfs.c 123247 2003-12-07 17:40:00Z des $
41 */
42
43#include <sys/param.h>
44#include <sys/queue.h>
45#include <sys/exec.h>
46#include <sys/lock.h>
47#include <sys/kernel.h>
48#include <sys/malloc.h>

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88}
89
90/*
91 * Adjust mode for some nodes that need it
92 */
93int
94procfs_attr(PFS_ATTR_ARGS)
95{
41 */
42
43#include <sys/param.h>
44#include <sys/queue.h>
45#include <sys/exec.h>
46#include <sys/lock.h>
47#include <sys/kernel.h>
48#include <sys/malloc.h>

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88}
89
90/*
91 * Adjust mode for some nodes that need it
92 */
93int
94procfs_attr(PFS_ATTR_ARGS)
95{
96
97 PROC_LOCK_ASSERT(p, MA_OWNED);
98
99 /* XXX inefficient, split into separate functions */
100 if (p->p_flag & P_SUGID)
101 vap->va_mode = 0;
102 else if (strcmp(pn->pn_name, "ctl") == 0 ||
103 strcmp(pn->pn_name, "note") == 0 ||
104 strcmp(pn->pn_name, "notepg") == 0)
105 vap->va_mode = 0200;
106 else if (strcmp(pn->pn_name, "mem") == 0 ||
107 strcmp(pn->pn_name, "regs") == 0 ||
108 strcmp(pn->pn_name, "dbregs") == 0 ||
109 strcmp(pn->pn_name, "fpregs") == 0)
110 vap->va_mode = 0600;
111
112 vap->va_uid = p->p_ucred->cr_uid;
113 vap->va_gid = p->p_ucred->cr_gid;
96 PROC_LOCK_ASSERT(p, MA_OWNED);
97
98 /* XXX inefficient, split into separate functions */
99 if (p->p_flag & P_SUGID)
100 vap->va_mode = 0;
101 else if (strcmp(pn->pn_name, "ctl") == 0 ||
102 strcmp(pn->pn_name, "note") == 0 ||
103 strcmp(pn->pn_name, "notepg") == 0)
104 vap->va_mode = 0200;
105 else if (strcmp(pn->pn_name, "mem") == 0 ||
106 strcmp(pn->pn_name, "regs") == 0 ||
107 strcmp(pn->pn_name, "dbregs") == 0 ||
108 strcmp(pn->pn_name, "fpregs") == 0)
109 vap->va_mode = 0600;
110
111 vap->va_uid = p->p_ucred->cr_uid;
112 vap->va_gid = p->p_ucred->cr_gid;
114
113
115 return (0);
116}
117
118/*
119 * Visibility: some files only exist for non-system processes
120 * Non-static because linprocfs uses it.
121 */
122int

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129/*
130 * Visibility: some files are only visible to process that can debug
131 * the target process.
132 */
133int
134procfs_candebug(PFS_VIS_ARGS)
135{
136 PROC_LOCK_ASSERT(p, MA_OWNED);
114 return (0);
115}
116
117/*
118 * Visibility: some files only exist for non-system processes
119 * Non-static because linprocfs uses it.
120 */
121int

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128/*
129 * Visibility: some files are only visible to process that can debug
130 * the target process.
131 */
132int
133procfs_candebug(PFS_VIS_ARGS)
134{
135 PROC_LOCK_ASSERT(p, MA_OWNED);
137 return ((p->p_flag & P_SYSTEM) == 0 &&
138 p_candebug(td, p) == 0);
136 return ((p->p_flag & P_SYSTEM) == 0 && p_candebug(td, p) == 0);
139}
140
141/*
142 * Constructor
143 */
144static int
145procfs_init(PFS_INIT_ARGS)
146{
147 struct pfs_node *root;
148 struct pfs_node *dir;
149 struct pfs_node *node;
150
151 root = pi->pi_root;
152
153 pfs_create_link(root, "curproc", procfs_docurproc,
154 NULL, NULL, 0);
137}
138
139/*
140 * Constructor
141 */
142static int
143procfs_init(PFS_INIT_ARGS)
144{
145 struct pfs_node *root;
146 struct pfs_node *dir;
147 struct pfs_node *node;
148
149 root = pi->pi_root;
150
151 pfs_create_link(root, "curproc", procfs_docurproc,
152 NULL, NULL, 0);
155
153
156 dir = pfs_create_dir(root, "pid",
157 procfs_attr, NULL, PFS_PROCDEP);
158 pfs_create_file(dir, "cmdline", procfs_doproccmdline,
159 NULL, NULL, PFS_RD);
160 pfs_create_file(dir, "ctl", procfs_doprocctl,
161 procfs_attr, NULL, PFS_WR);
162 pfs_create_file(dir, "dbregs", procfs_doprocdbregs,
163 procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);

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176 pfs_create_file(dir, "notepg", procfs_doprocnote,
177 procfs_attr, procfs_candebug, PFS_WR);
178 pfs_create_file(dir, "regs", procfs_doprocregs,
179 procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
180 pfs_create_file(dir, "rlimit", procfs_doprocrlimit,
181 NULL, NULL, PFS_RD);
182 pfs_create_file(dir, "status", procfs_doprocstatus,
183 NULL, NULL, PFS_RD);
154 dir = pfs_create_dir(root, "pid",
155 procfs_attr, NULL, PFS_PROCDEP);
156 pfs_create_file(dir, "cmdline", procfs_doproccmdline,
157 NULL, NULL, PFS_RD);
158 pfs_create_file(dir, "ctl", procfs_doprocctl,
159 procfs_attr, NULL, PFS_WR);
160 pfs_create_file(dir, "dbregs", procfs_doprocdbregs,
161 procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);

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174 pfs_create_file(dir, "notepg", procfs_doprocnote,
175 procfs_attr, procfs_candebug, PFS_WR);
176 pfs_create_file(dir, "regs", procfs_doprocregs,
177 procfs_attr, procfs_candebug, PFS_RDWR|PFS_RAW);
178 pfs_create_file(dir, "rlimit", procfs_doprocrlimit,
179 NULL, NULL, PFS_RD);
180 pfs_create_file(dir, "status", procfs_doprocstatus,
181 NULL, NULL, PFS_RD);
184
182
185 pfs_create_link(dir, "file", procfs_doprocfile,
186 NULL, procfs_notsystem, 0);
183 pfs_create_link(dir, "file", procfs_doprocfile,
184 NULL, procfs_notsystem, 0);
187
185
188 return (0);
189}
190
191/*
192 * Destructor
193 */
194static int
195procfs_uninit(PFS_INIT_ARGS)
196{
186 return (0);
187}
188
189/*
190 * Destructor
191 */
192static int
193procfs_uninit(PFS_INIT_ARGS)
194{
197
198 /* nothing to do, pseudofs will GC */
199 return (0);
200}
201
202PSEUDOFS(procfs, 1);
195 /* nothing to do, pseudofs will GC */
196 return (0);
197}
198
199PSEUDOFS(procfs, 1);