| imgact_gzip.c (15494) | imgact_gzip.c (15538) |
|---|---|
| 1/* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * | 1/* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * |
| 9 * $Id: imgact_gzip.c,v 1.20 1996/03/19 15:02:47 bde Exp $ | 9 * $Id: imgact_gzip.c,v 1.21 1996/05/01 02:42:50 bde Exp $ |
| 10 * 11 * This module handles execution of a.out files which have been run through 12 * "gzip". This saves diskspace, but wastes cpu-cycles and VM. 13 * 14 * TODO: 15 * text-segments should be made R/O after being filled 16 * is the vm-stuff safe ? 17 * should handle the entire header of gzip'ed stuff. --- 125 unchanged lines hidden (view full) --- 143 /* 144 * Set file/virtual offset based on a.out variant. We do two cases: 145 * host byte order and network byte order (for NetBSD compatibility) 146 */ 147 switch ((int) (gz->a_out.a_magic & 0xffff)) { 148 case ZMAGIC: 149 gz->virtual_offset = 0; 150 if (gz->a_out.a_text) { | 10 * 11 * This module handles execution of a.out files which have been run through 12 * "gzip". This saves diskspace, but wastes cpu-cycles and VM. 13 * 14 * TODO: 15 * text-segments should be made R/O after being filled 16 * is the vm-stuff safe ? 17 * should handle the entire header of gzip'ed stuff. --- 125 unchanged lines hidden (view full) --- 143 /* 144 * Set file/virtual offset based on a.out variant. We do two cases: 145 * host byte order and network byte order (for NetBSD compatibility) 146 */ 147 switch ((int) (gz->a_out.a_magic & 0xffff)) { 148 case ZMAGIC: 149 gz->virtual_offset = 0; 150 if (gz->a_out.a_text) { |
| 151 gz->file_offset = NBPG; | 151 gz->file_offset = PAGE_SIZE; |
| 152 } else { 153 /* Bill's "screwball mode" */ 154 gz->file_offset = 0; 155 } 156 break; 157 case QMAGIC: | 152 } else { 153 /* Bill's "screwball mode" */ 154 gz->file_offset = 0; 155 } 156 break; 157 case QMAGIC: |
| 158 gz->virtual_offset = NBPG; | 158 gz->virtual_offset = PAGE_SIZE; |
| 159 gz->file_offset = 0; 160 break; 161 default: 162 /* NetBSD compatibility */ 163 switch ((int) (ntohl(gz->a_out.a_magic) & 0xffff)) { 164 case ZMAGIC: 165 case QMAGIC: | 159 gz->file_offset = 0; 160 break; 161 default: 162 /* NetBSD compatibility */ 163 switch ((int) (ntohl(gz->a_out.a_magic) & 0xffff)) { 164 case ZMAGIC: 165 case QMAGIC: |
| 166 gz->virtual_offset = NBPG; | 166 gz->virtual_offset = PAGE_SIZE; |
| 167 gz->file_offset = 0; 168 break; 169 default: 170 gz->where = __LINE__; 171 return (-1); 172 } 173 } 174 | 167 gz->file_offset = 0; 168 break; 169 default: 170 gz->where = __LINE__; 171 return (-1); 172 } 173 } 174 |
| 175 gz->bss_size = roundup(gz->a_out.a_bss, NBPG); | 175 gz->bss_size = roundup(gz->a_out.a_bss, PAGE_SIZE); |
| 176 177 /* 178 * Check various fields in header for validity/bounds. 179 */ 180 if ( /* entry point must lay with text region */ 181 gz->a_out.a_entry < gz->virtual_offset || 182 gz->a_out.a_entry >= gz->virtual_offset + gz->a_out.a_text || 183 184 /* text and data size must each be page rounded */ | 176 177 /* 178 * Check various fields in header for validity/bounds. 179 */ 180 if ( /* entry point must lay with text region */ 181 gz->a_out.a_entry < gz->virtual_offset || 182 gz->a_out.a_entry >= gz->virtual_offset + gz->a_out.a_text || 183 184 /* text and data size must each be page rounded */ |
| 185 gz->a_out.a_text % NBPG || 186 gz->a_out.a_data % NBPG) { | 185 gz->a_out.a_text & PAGE_MASK || gz->a_out.a_data & PAGE_MASK) { |
| 187 gz->where = __LINE__; 188 return (-1); 189 } 190 /* 191 * text/data/bss must not exceed limits 192 */ 193 if ( /* text can't exceed maximum text size */ 194 gz->a_out.a_text > MAXTSIZ || --- 189 unchanged lines hidden --- | 186 gz->where = __LINE__; 187 return (-1); 188 } 189 /* 190 * text/data/bss must not exceed limits 191 */ 192 if ( /* text can't exceed maximum text size */ 193 gz->a_out.a_text > MAXTSIZ || --- 189 unchanged lines hidden --- |