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7127 remove -Wno-missing-braces from Makefile.uts
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--- old/usr/src/uts/common/exec/java/java.c
+++ new/usr/src/uts/common/exec/java/java.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 /*
27 27 * Launch Java executables via exec(2).
28 28 *
29 29 * Java executables are platform-independent executable files
30 30 * based on the JAR file format. Executable JAR files contain a
31 31 * special 'extra field' header in the first file of the archive
32 32 * that marks the file as a true executable. The data in that field
33 33 * is used to pass additional run-time information to the Java VM.
34 34 *
35 35 * This handler looks for the appropriate magic number on the
36 36 * front of the file, checks that the JAR file is executable, then
37 37 * invokes the Java runtime environment to do the rest of the work.
38 38 */
39 39
40 40 #include <sys/types.h>
41 41 #include <sys/proc.h>
42 42 #include <sys/vnode.h>
43 43 #include <sys/exec.h>
44 44 #include <sys/modctl.h>
45 45 #include <sys/cmn_err.h>
46 46 #include <sys/pathname.h>
47 47
48 48 /*
49 49 * These variables can be tweaked via /etc/system to allow prototyping
50 50 * and debugging. See PSARC/1997/123.
51 51 *
52 52 * Modified by PSARC/1999/012 to be Contract Private between Solaris and
53 53 * the Java Technology Group. It is expected that any future change to
54 54 * these variables be coordinated between the consolidations.
55 55 */
56 56 #if defined(__sparc)
57 57 char *jexec = "/usr/java/jre/lib/sparc/jexec";
58 58 #elif defined(__i386) || defined(__i386_COMPAT)
59 59 char *jexec = "/usr/java/jre/lib/i386/jexec";
60 60 #else
61 61 #error "Unknown ISA"
62 62 #endif
63 63 char *jexec_arg = "-jar";
64 64
65 65 /*
66 66 * ZIP/JAR file header information
67 67 */
68 68 #define SIGSIZ 4
69 69 #define LOCSIG "PK\003\004"
70 70 #define LOCHDRSIZ 30
71 71
72 72 #define CH(b, n) (((unsigned char *)(b))[n])
73 73 #define SH(b, n) (CH(b, n) | (CH(b, n+1) << 8))
74 74 #define LG(b, n) (SH(b, n) | (SH(b, n+2) << 16))
75 75
76 76 #define LOCNAM(b) (SH(b, 26)) /* filename size */
77 77 #define LOCEXT(b) (SH(b, 28)) /* extra field size */
78 78
79 79 #define XFHSIZ 4 /* header id, data size */
80 80 #define XFHID(b) (SH(b, 0)) /* extract field header id */
81 81 #define XFDATASIZ(b) (SH(b, 2)) /* extract field data size */
82 82 #define XFJAVASIG 0xcafe /* java executables */
83 83
84 84 /*ARGSUSED3*/
85 85 static int
86 86 javaexec(vnode_t *vp, struct execa *uap, struct uarg *args,
87 87 struct intpdata *idatap, int level, long *execsz, int setid,
88 88 caddr_t execfile, cred_t *cred, int brand_action)
89 89 {
90 90 struct intpdata idata;
91 91 int error;
92 92 ssize_t resid;
93 93 vnode_t *nvp;
94 94 off_t xoff, xoff_end;
95 95 char lochdr[LOCHDRSIZ];
96 96 struct pathname lookpn;
97 97 struct pathname resolvepn;
98 98 char *opath;
99 99
100 100 if (level)
101 101 return (ENOEXEC); /* no recursion */
102 102
103 103 /*
104 104 * Read in the full local file header, and validate
105 105 * the initial signature.
106 106 */
107 107 if ((error = vn_rdwr(UIO_READ, vp, lochdr, sizeof (lochdr),
108 108 0, UIO_SYSSPACE, 0, (rlim64_t)0, cred, &resid)) != 0)
109 109 return (error);
110 110 if (resid != 0 || strncmp(lochdr, LOCSIG, SIGSIZ) != 0)
111 111 return (ENOEXEC);
112 112
113 113 /*
114 114 * Ok, so this -is- a ZIP file, and might even be a JAR file.
115 115 * Is it a Java executable?
116 116 */
117 117 xoff = sizeof (lochdr) + LOCNAM(lochdr);
118 118 xoff_end = xoff + LOCEXT(lochdr);
119 119
120 120 while (xoff < xoff_end) {
121 121 char xfhdr[XFHSIZ];
122 122
123 123 if ((error = vn_rdwr(UIO_READ, vp, xfhdr, sizeof (xfhdr),
124 124 xoff, UIO_SYSSPACE, 0, (rlim64_t)0, cred, &resid)) != 0)
125 125 return (error);
126 126 if (resid != 0)
127 127 return (ENOEXEC);
128 128 if (XFHID(xfhdr) == XFJAVASIG)
129 129 break;
130 130 xoff += sizeof (xfhdr) + XFDATASIZ(xfhdr);
131 131 }
132 132
133 133 if (xoff >= xoff_end)
134 134 return (ENOEXEC);
135 135
136 136 /*
137 137 * Note: If we ever make setid execution work, we need to ensure
138 138 * that we use /dev/fd to avoid the classic setuid shell script
139 139 * security hole.
140 140 */
141 141 if (setid)
142 142 return (EACCES);
143 143
144 144 /*
145 145 * Find and invoke the Java runtime environment on the file
146 146 */
147 147 idata.intp = NULL;
148 148 idata.intp_name[0] = jexec;
149 149 idata.intp_arg[0] = jexec_arg;
150 150 if (error = pn_get(idata.intp_name[0], UIO_SYSSPACE, &lookpn))
151 151 return (error);
152 152 pn_alloc(&resolvepn);
153 153 if (error = lookuppn(&lookpn, &resolvepn, FOLLOW, NULLVPP, &nvp)) {
154 154 pn_free(&resolvepn);
155 155 pn_free(&lookpn);
156 156 return (ENOEXEC);
157 157 }
158 158 opath = args->pathname;
159 159 args->pathname = resolvepn.pn_path;
160 160 /* don't free resolvepn until we are done with args */
161 161 pn_free(&lookpn);
162 162 error = gexec(&nvp, uap, args, &idata, level + 1, execsz, execfile,
163 163 cred, EBA_NONE);
164 164
165 165 if (!error) {
166 166 /*
167 167 * Close this Java executable as the interpreter
168 168 * will open and close it later on.
169 169 */
170 170 (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, cred, NULL);
171 171 }
172 172
173 173 VN_RELE(nvp);
174 174 args->pathname = opath;
175 175 pn_free(&resolvepn);
176 176 return (error);
177 177 }
178 178
179 179 static struct execsw jexecsw = {
180 180 javamagicstr,
181 181 0,
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181 lines elided |
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182 182 4,
183 183 javaexec,
184 184 NULL
185 185 };
186 186
187 187 static struct modlexec jmodlexec = {
188 188 &mod_execops, "exec for Java", &jexecsw
189 189 };
190 190
191 191 static struct modlinkage jmodlinkage = {
192 - MODREV_1, &jmodlexec, NULL
192 + MODREV_1, { &jmodlexec, NULL }
193 193 };
194 194
195 195 int
196 196 _init(void)
197 197 {
198 198 return (mod_install(&jmodlinkage));
199 199 }
200 200
201 201 int
202 202 _fini(void)
203 203 {
204 204 return (mod_remove(&jmodlinkage));
205 205 }
206 206
207 207 int
208 208 _info(struct modinfo *modinfop)
209 209 {
210 210 return (mod_info(&jmodlinkage, modinfop));
211 211 }
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