Commit | Line | Data |
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805e021f CE |
1 | /* |
2 | * Copyright 2000, International Business Machines Corporation and others. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This software has been released under the terms of the IBM Public | |
6 | * License. For details, see the LICENSE file in the top-level source | |
7 | * directory or online at http://www.openafs.org/dl/license10.html | |
8 | */ | |
9 | ||
10 | /* | |
11 | * HPUX inode operations | |
12 | * | |
13 | * Implements: | |
14 | * | |
15 | */ | |
16 | #include <afsconfig.h> | |
17 | #include "afs/param.h" | |
18 | ||
19 | ||
20 | #include "afs/sysincludes.h" /* Standard vendor system headers */ | |
21 | #include "afsincludes.h" /* Afs-based standard headers */ | |
22 | #include "afs/osi_inode.h" | |
23 | #include "afs/afs_stats.h" /* statistics stuff */ | |
24 | #include <sys/mount.h> | |
25 | ||
26 | ||
27 | static struct inode * | |
28 | getinode(struct vfs *vfsp, dev_t dev, ino_t inode, int *perror) | |
29 | { | |
30 | struct mount *mp = (vfsp ? VFSTOM(vfsp) : 0); | |
31 | struct inode *pip; | |
32 | *perror = 0; | |
33 | ||
34 | if (!mp && !(mp = getmp(dev))) { | |
35 | u.u_error = ENXIO; | |
36 | return (NULL); | |
37 | } | |
38 | pip = iget(dev, mp, inode); | |
39 | if (!pip) | |
40 | *perror = BAD_IGET; | |
41 | return (pip); | |
42 | } | |
43 | ||
44 | struct inode * | |
45 | igetinode(struct vfs *vfsp, dev_t dev, ino_t inode, int *perror) | |
46 | { | |
47 | struct inode *pip, *ip; | |
48 | extern struct osi_dev cacheDev; | |
49 | int code = 0; | |
50 | ||
51 | *perror = 0; | |
52 | AFS_STATCNT(igetinode); | |
53 | ip = getinode(vfsp, dev, inode, perror); | |
54 | if (ip == NULL) { | |
55 | *perror = BAD_IGET; | |
56 | u.u_error = ENOENT; /* Well... */ | |
57 | return; | |
58 | } | |
59 | if (ip->i_mode == 0) { | |
60 | /* Not an allocated inode */ | |
61 | iforget(ip); | |
62 | u.u_error = ENOENT; | |
63 | return; | |
64 | } | |
65 | if (ip->i_nlink == 0 || (ip->i_mode & IFMT) != IFREG) { | |
66 | iput(ip); | |
67 | u.u_error = ENOENT; | |
68 | return; | |
69 | } | |
70 | return ip; | |
71 | } | |
72 | ||
73 | iforget(ip) | |
74 | struct inode *ip; | |
75 | { | |
76 | idrop(ip); | |
77 | } | |
78 | ||
79 | afs_syscall_icreate(dev, near_inode, param1, param2, param3, param4) | |
80 | long dev, near_inode, param1, param2, param3, param4; | |
81 | { | |
82 | int dummy, err = 0; | |
83 | struct inode *ip, *newip; | |
84 | ||
85 | AFS_STATCNT(afs_syscall_icreate); | |
86 | ||
87 | if (!afs_suser(NULL)) { | |
88 | u.u_error = EPERM; | |
89 | goto out; | |
90 | } | |
91 | ||
92 | ip = getinode(0, (dev_t) dev, 2, &dummy); | |
93 | if (ip == NULL) { | |
94 | u.u_error = ENOENT; /* Well... */ | |
95 | goto out; | |
96 | } | |
97 | ||
98 | newip = (struct inode *)ialloc(ip, near_inode, 0); | |
99 | iput(ip); | |
100 | if (newip == NULL) | |
101 | goto out; | |
102 | ||
103 | newip->i_flag |= IACC | IUPD | ICHG; | |
104 | newip->i_nlink = 1; | |
105 | newip->i_mode = IFREG; | |
106 | newip->i_vnode.v_type = VREG; | |
107 | newip->i_vicemagic = VICEMAGIC; | |
108 | newip->i_vicep1 = param1; | |
109 | newip->i_vicep2 = param2; | |
110 | I_VICE3(newip) = param3; | |
111 | newip->i_vicep4 = param4; | |
112 | u.u_r.r_val1 = newip->i_number; | |
113 | ||
114 | iput(newip); | |
115 | ||
116 | out: | |
117 | return err; | |
118 | } | |
119 | ||
120 | afs_syscall_iopen(dev, inode, usrmod) | |
121 | int dev, inode, usrmod; | |
122 | { | |
123 | struct file *fp; | |
124 | struct inode *ip; | |
125 | struct vnode *vp = NULL; | |
126 | int dummy; | |
127 | extern struct fileops vnodefops; | |
128 | int code; | |
129 | int fd; | |
130 | ||
131 | AFS_STATCNT(afs_syscall_iopen); | |
132 | ||
133 | if (!afs_suser(NULL)) { | |
134 | u.u_error = EPERM; | |
135 | goto out; | |
136 | } | |
137 | ||
138 | ip = igetinode(0, (dev_t) dev, (ino_t) inode, &dummy); | |
139 | if (u.u_error) | |
140 | goto out; | |
141 | fp = falloc(); | |
142 | if (!fp) { | |
143 | iput(ip); | |
144 | goto out; | |
145 | } | |
146 | fd = u.u_r.r_val1; | |
147 | iunlock(ip); | |
148 | ||
149 | fp->f_ops = &vnodefops; | |
150 | vp = ITOV(ip); | |
151 | fp->f_data = (char *)vp; | |
152 | fp->f_type = DTYPE_VNODE; | |
153 | fp->f_flag = (usrmod + 1) & (FMASK); | |
154 | ||
155 | /* Obtained from hp kernel sys/vfs_scalls.c: copen(). | |
156 | * Otherwise we panic because the v_writecount | |
157 | * goes less than 0 during close. | |
158 | */ | |
159 | if ((vp->v_type == VREG) && (fp->f_flag & FWRITE)) { | |
160 | VN_INC_WRITECOUNT(vp); | |
161 | } | |
162 | ||
163 | /* fp->f_count, f_msgcount are set by falloc */ | |
164 | /* fp->f_offset zeroed by falloc */ | |
165 | /* f_cred set by falloc */ | |
166 | ||
167 | /* | |
168 | * Obtained from hp kernel sys/vfs_scalls.c: copen() does | |
169 | * a PUTF() (defined earlier in the file) before returning, | |
170 | * so we parrot what it does. If this is not done, then | |
171 | * threaded processes will get EBADF errors when they try | |
172 | * to use the resulting file descriptor (e.g. with lseek()). | |
173 | * | |
174 | * Note: u.u_r.r_val1 is set by ufalloc(), which is | |
175 | * called by falloc(), which is called above. | |
176 | */ | |
177 | if (is_multithreaded(u.u_procp)) { | |
178 | putf(fd); | |
179 | } | |
180 | ||
181 | out: | |
182 | return; | |
183 | } | |
184 | ||
185 | afs_syscall_iincdec(dev, inode, inode_p1, amount) | |
186 | int dev, inode, inode_p1, amount; | |
187 | { | |
188 | int dummy; | |
189 | struct inode *ip; | |
190 | afs_int32 code; | |
191 | ||
192 | if (!afs_suser(NULL)) { | |
193 | u.u_error = EPERM; | |
194 | goto out; | |
195 | } | |
196 | ||
197 | ip = igetinode(0, (dev_t) dev, (ino_t) inode, &dummy); | |
198 | if (u.u_error) { | |
199 | goto out; | |
200 | } | |
201 | ||
202 | if (!IS_VICEMAGIC(ip)) | |
203 | u.u_error = EPERM; | |
204 | else if (ip->i_vicep1 != inode_p1) | |
205 | u.u_error = ENXIO; | |
206 | else { | |
207 | ip->i_nlink += amount; | |
208 | if (ip->i_nlink == 0) { | |
209 | CLEAR_VICEMAGIC(ip); | |
210 | } | |
211 | ip->i_flag |= ICHG; | |
212 | } | |
213 | ||
214 | iput(ip); | |
215 | ||
216 | out: | |
217 | return; | |
218 | } |