| file_subs.c (90110) | file_subs.c (90113) |
|---|---|
| 1/*- 2 * Copyright (c) 1992 Keith Muller. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Keith Muller of the University of California, San Diego. 8 * --- 26 unchanged lines hidden (view full) --- 35 * SUCH DAMAGE. 36 */ 37 38#ifndef lint 39#if 0 40static char sccsid[] = "@(#)file_subs.c 8.1 (Berkeley) 5/31/93"; 41#endif 42static const char rcsid[] = | 1/*- 2 * Copyright (c) 1992 Keith Muller. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Keith Muller of the University of California, San Diego. 8 * --- 26 unchanged lines hidden (view full) --- 35 * SUCH DAMAGE. 36 */ 37 38#ifndef lint 39#if 0 40static char sccsid[] = "@(#)file_subs.c 8.1 (Berkeley) 5/31/93"; 41#endif 42static const char rcsid[] = |
| 43 "$FreeBSD: head/bin/pax/file_subs.c 90110 2002-02-02 06:48:10Z imp $"; | 43 "$FreeBSD: head/bin/pax/file_subs.c 90113 2002-02-02 07:07:59Z imp $"; |
| 44#endif /* not lint */ 45 46#include <sys/types.h> 47#include <sys/time.h> 48#include <sys/stat.h> 49#include <unistd.h> 50#include <fcntl.h> 51#include <string.h> 52#include <stdio.h> 53#include <errno.h> 54#include <sys/uio.h> 55#include <stdlib.h> 56#include "pax.h" 57#include "options.h" 58#include "extern.h" 59 60static int | 44#endif /* not lint */ 45 46#include <sys/types.h> 47#include <sys/time.h> 48#include <sys/stat.h> 49#include <unistd.h> 50#include <fcntl.h> 51#include <string.h> 52#include <stdio.h> 53#include <errno.h> 54#include <sys/uio.h> 55#include <stdlib.h> 56#include "pax.h" 57#include "options.h" 58#include "extern.h" 59 60static int |
| 61mk_link(register char *,register struct stat *,register char *, int); | 61mk_link(char *,struct stat *,char *, int); |
| 62 63/* 64 * routines that deal with file operations such as: creating, removing; 65 * and setting access modes, uid/gid and times of files 66 */ 67 68#define FILEBITS (S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO) 69#define SETBITS (S_ISUID | S_ISGID) 70#define ABITS (FILEBITS | SETBITS) 71 72/* 73 * file_creat() 74 * Create and open a file. 75 * Return: 76 * file descriptor or -1 for failure 77 */ 78 79int | 62 63/* 64 * routines that deal with file operations such as: creating, removing; 65 * and setting access modes, uid/gid and times of files 66 */ 67 68#define FILEBITS (S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO) 69#define SETBITS (S_ISUID | S_ISGID) 70#define ABITS (FILEBITS | SETBITS) 71 72/* 73 * file_creat() 74 * Create and open a file. 75 * Return: 76 * file descriptor or -1 for failure 77 */ 78 79int |
| 80file_creat(register ARCHD *arcn) | 80file_creat(ARCHD *arcn) |
| 81{ 82 int fd = -1; 83 mode_t file_mode; 84 int oerrno; 85 86 /* 87 * assume file doesn't exist, so just try to create it, most times this 88 * works. We have to take special handling when the file does exist. To --- 40 unchanged lines hidden (view full) --- 129 * file_close() 130 * Close file descriptor to a file just created by pax. Sets modes, 131 * ownership and times as required. 132 * Return: 133 * 0 for success, -1 for failure 134 */ 135 136void | 81{ 82 int fd = -1; 83 mode_t file_mode; 84 int oerrno; 85 86 /* 87 * assume file doesn't exist, so just try to create it, most times this 88 * works. We have to take special handling when the file does exist. To --- 40 unchanged lines hidden (view full) --- 129 * file_close() 130 * Close file descriptor to a file just created by pax. Sets modes, 131 * ownership and times as required. 132 * Return: 133 * 0 for success, -1 for failure 134 */ 135 136void |
| 137file_close(register ARCHD *arcn, int fd) | 137file_close(ARCHD *arcn, int fd) |
| 138{ 139 int res = 0; 140 141 if (fd < 0) 142 return; 143 if (close(fd) < 0) 144 syswarn(0, errno, "Unable to close file descriptor on %s", 145 arcn->name); --- 23 unchanged lines hidden (view full) --- 169 * lnk_creat() 170 * Create a hard link to arcn->ln_name from arcn->name. arcn->ln_name 171 * must exist; 172 * Return: 173 * 0 if ok, -1 otherwise 174 */ 175 176int | 138{ 139 int res = 0; 140 141 if (fd < 0) 142 return; 143 if (close(fd) < 0) 144 syswarn(0, errno, "Unable to close file descriptor on %s", 145 arcn->name); --- 23 unchanged lines hidden (view full) --- 169 * lnk_creat() 170 * Create a hard link to arcn->ln_name from arcn->name. arcn->ln_name 171 * must exist; 172 * Return: 173 * 0 if ok, -1 otherwise 174 */ 175 176int |
| 177lnk_creat(register ARCHD *arcn) | 177lnk_creat(ARCHD *arcn) |
| 178{ 179 struct stat sb; 180 181 /* 182 * we may be running as root, so we have to be sure that link target 183 * is not a directory, so we lstat and check 184 */ 185 if (lstat(arcn->ln_name, &sb) < 0) { --- 17 unchanged lines hidden (view full) --- 203 * with the -l flag. No warning or error if this does not succeed (we will 204 * then just create the file) 205 * Return: 206 * 1 if copy() should try to create this file node 207 * 0 if cross_lnk() ok, -1 for fatal flaw (like linking to self). 208 */ 209 210int | 178{ 179 struct stat sb; 180 181 /* 182 * we may be running as root, so we have to be sure that link target 183 * is not a directory, so we lstat and check 184 */ 185 if (lstat(arcn->ln_name, &sb) < 0) { --- 17 unchanged lines hidden (view full) --- 203 * with the -l flag. No warning or error if this does not succeed (we will 204 * then just create the file) 205 * Return: 206 * 1 if copy() should try to create this file node 207 * 0 if cross_lnk() ok, -1 for fatal flaw (like linking to self). 208 */ 209 210int |
| 211cross_lnk(register ARCHD *arcn) | 211cross_lnk(ARCHD *arcn) |
| 212{ 213 /* 214 * try to make a link to original file (-l flag in copy mode). make sure 215 * we do not try to link to directories in case we are running as root 216 * (and it might succeed). 217 */ 218 if (arcn->type == PAX_DIR) 219 return(1); --- 7 unchanged lines hidden (view full) --- 227 * accident. This slows things down a little, but we have to protect all 228 * those people who make typing errors. 229 * Return: 230 * 1 the target does not exist, go ahead and copy 231 * 0 skip it file exists (-k) or may be the same as source file 232 */ 233 234int | 212{ 213 /* 214 * try to make a link to original file (-l flag in copy mode). make sure 215 * we do not try to link to directories in case we are running as root 216 * (and it might succeed). 217 */ 218 if (arcn->type == PAX_DIR) 219 return(1); --- 7 unchanged lines hidden (view full) --- 227 * accident. This slows things down a little, but we have to protect all 228 * those people who make typing errors. 229 * Return: 230 * 1 the target does not exist, go ahead and copy 231 * 0 skip it file exists (-k) or may be the same as source file 232 */ 233 234int |
| 235chk_same(register ARCHD *arcn) | 235chk_same(ARCHD *arcn) |
| 236{ 237 struct stat sb; 238 239 /* 240 * if file does not exist, return. if file exists and -k, skip it 241 * quietly 242 */ 243 if (lstat(arcn->name, &sb) < 0) --- 20 unchanged lines hidden (view full) --- 264 * 0 if successful (or we are done with this file but no error, such as 265 * finding the from file exists and the user has set -k). 266 * 1 when ign was set to indicates we could not make the link but we 267 * should try to copy/extract the file as that might work (and is an 268 * allowed option). -1 an error occurred. 269 */ 270 271static int | 236{ 237 struct stat sb; 238 239 /* 240 * if file does not exist, return. if file exists and -k, skip it 241 * quietly 242 */ 243 if (lstat(arcn->name, &sb) < 0) --- 20 unchanged lines hidden (view full) --- 264 * 0 if successful (or we are done with this file but no error, such as 265 * finding the from file exists and the user has set -k). 266 * 1 when ign was set to indicates we could not make the link but we 267 * should try to copy/extract the file as that might work (and is an 268 * allowed option). -1 an error occurred. 269 */ 270 271static int |
| 272mk_link(register char *to, register struct stat *to_sb, register char *from, | 272mk_link(char *to, struct stat *to_sb, char *from, |
| 273 int ign) 274{ 275 struct stat sb; 276 int oerrno; 277 278 /* 279 * if from file exists, it has to be unlinked to make the link. If the 280 * file exists and -k is set, skip it quietly --- 56 unchanged lines hidden (view full) --- 337 * node_creat() 338 * create an entry in the file system (other than a file or hard link). 339 * If successful, sets uid/gid modes and times as required. 340 * Return: 341 * 0 if ok, -1 otherwise 342 */ 343 344int | 273 int ign) 274{ 275 struct stat sb; 276 int oerrno; 277 278 /* 279 * if from file exists, it has to be unlinked to make the link. If the 280 * file exists and -k is set, skip it quietly --- 56 unchanged lines hidden (view full) --- 337 * node_creat() 338 * create an entry in the file system (other than a file or hard link). 339 * If successful, sets uid/gid modes and times as required. 340 * Return: 341 * 0 if ok, -1 otherwise 342 */ 343 344int |
| 345node_creat(register ARCHD *arcn) | 345node_creat(ARCHD *arcn) |
| 346{ | 346{ |
| 347 register int res; 348 register int ign = 0; 349 register int oerrno; 350 register int pass = 0; | 347 int res; 348 int ign = 0; 349 int oerrno; 350 int pass = 0; |
| 351 mode_t file_mode; 352 struct stat sb; 353 354 /* 355 * create node based on type, if that fails try to unlink the node and 356 * try again. finally check the path and try again. As noted in the 357 * file and link creation routines, this method seems to exhibit the 358 * best performance in general use workloads. --- 142 unchanged lines hidden (view full) --- 501 * continue as proper modes etc will always be set for it later on. 502 * Return: 503 * 0 is ok to proceed, no file with the specified name exists 504 * -1 we were unable to remove the node, or we should not remove it (-k) 505 * 1 we found a directory and we were going to create a directory. 506 */ 507 508int | 351 mode_t file_mode; 352 struct stat sb; 353 354 /* 355 * create node based on type, if that fails try to unlink the node and 356 * try again. finally check the path and try again. As noted in the 357 * file and link creation routines, this method seems to exhibit the 358 * best performance in general use workloads. --- 142 unchanged lines hidden (view full) --- 501 * continue as proper modes etc will always be set for it later on. 502 * Return: 503 * 0 is ok to proceed, no file with the specified name exists 504 * -1 we were unable to remove the node, or we should not remove it (-k) 505 * 1 we found a directory and we were going to create a directory. 506 */ 507 508int |
| 509unlnk_exist(register char *name, register int type) | 509unlnk_exist(char *name, int type) |
| 510{ 511 struct stat sb; 512 513 /* 514 * the file does not exist, or -k we are done 515 */ 516 if (lstat(name, &sb) < 0) 517 return(0); --- 34 unchanged lines hidden (view full) --- 552 * NOTE: this routine is a real performance loss. It is only used as a 553 * last resort when trying to create entries in the file system. 554 * Return: 555 * -1 when it could find nothing it is allowed to fix. 556 * 0 otherwise 557 */ 558 559int | 510{ 511 struct stat sb; 512 513 /* 514 * the file does not exist, or -k we are done 515 */ 516 if (lstat(name, &sb) < 0) 517 return(0); --- 34 unchanged lines hidden (view full) --- 552 * NOTE: this routine is a real performance loss. It is only used as a 553 * last resort when trying to create entries in the file system. 554 * Return: 555 * -1 when it could find nothing it is allowed to fix. 556 * 0 otherwise 557 */ 558 559int |
| 560chk_path( register char *name, uid_t st_uid, gid_t st_gid) | 560chk_path( char *name, uid_t st_uid, gid_t st_gid) |
| 561{ | 561{ |
| 562 register char *spt = name; | 562 char *spt = name; |
| 563 struct stat sb; 564 int retval = -1; 565 566 /* 567 * watch out for paths with nodes stored directly in / (e.g. /bozo) 568 */ 569 if (*spt == '/') 570 ++spt; --- 206 unchanged lines hidden (view full) --- 777 * sz: basic file block allocation size 778 * cnt: number of bytes on this write 779 * str: buffer to write 780 * Return: 781 * number of bytes written, -1 on write (or lseek) error. 782 */ 783 784int | 563 struct stat sb; 564 int retval = -1; 565 566 /* 567 * watch out for paths with nodes stored directly in / (e.g. /bozo) 568 */ 569 if (*spt == '/') 570 ++spt; --- 206 unchanged lines hidden (view full) --- 777 * sz: basic file block allocation size 778 * cnt: number of bytes on this write 779 * str: buffer to write 780 * Return: 781 * number of bytes written, -1 on write (or lseek) error. 782 */ 783 784int |
| 785file_write(int fd, char *str, register int cnt, int *rem, int *isempt, int sz, | 785file_write(int fd, char *str, int cnt, int *rem, int *isempt, int sz, |
| 786 char *name) 787{ | 786 char *name) 787{ |
| 788 register char *pt; 789 register char *end; 790 register int wcnt; 791 register char *st = str; | 788 char *pt; 789 char *end; 790 int wcnt; 791 char *st = str; |
| 792 793 /* 794 * while we have data to process 795 */ 796 while (cnt) { 797 if (!*rem) { 798 /* 799 * We are now at the start of file system block again --- 89 unchanged lines hidden (view full) --- 889 890/* 891 * rdfile_close() 892 * close a file we have beed reading (to copy or archive). If we have to 893 * reset access time (tflag) do so (the times are stored in arcn). 894 */ 895 896void | 792 793 /* 794 * while we have data to process 795 */ 796 while (cnt) { 797 if (!*rem) { 798 /* 799 * We are now at the start of file system block again --- 89 unchanged lines hidden (view full) --- 889 890/* 891 * rdfile_close() 892 * close a file we have beed reading (to copy or archive). If we have to 893 * reset access time (tflag) do so (the times are stored in arcn). 894 */ 895 896void |
| 897rdfile_close(register ARCHD *arcn, register int *fd) | 897rdfile_close(ARCHD *arcn, int *fd) |
| 898{ 899 /* 900 * make sure the file is open 901 */ 902 if (*fd < 0) 903 return; 904 905 (void)close(*fd); --- 13 unchanged lines hidden (view full) --- 919 * read a file to calculate its crc. This is a real drag. Archive formats 920 * that have this, end up reading the file twice (we have to write the 921 * header WITH the crc before writing the file contents. Oh well... 922 * Return: 923 * 0 if was able to calculate the crc, -1 otherwise 924 */ 925 926int | 898{ 899 /* 900 * make sure the file is open 901 */ 902 if (*fd < 0) 903 return; 904 905 (void)close(*fd); --- 13 unchanged lines hidden (view full) --- 919 * read a file to calculate its crc. This is a real drag. Archive formats 920 * that have this, end up reading the file twice (we have to write the 921 * header WITH the crc before writing the file contents. Oh well... 922 * Return: 923 * 0 if was able to calculate the crc, -1 otherwise 924 */ 925 926int |
| 927set_crc(register ARCHD *arcn, register int fd) | 927set_crc(ARCHD *arcn, int fd) |
| 928{ | 928{ |
| 929 register int i; 930 register int res; | 929 int i; 930 int res; |
| 931 off_t cpcnt = 0L; 932 u_long size; 933 unsigned long crc = 0L; 934 char tbuf[FILEBLK]; 935 struct stat sb; 936 937 if (fd < 0) { 938 /* --- 39 unchanged lines hidden --- | 931 off_t cpcnt = 0L; 932 u_long size; 933 unsigned long crc = 0L; 934 char tbuf[FILEBLK]; 935 struct stat sb; 936 937 if (fd < 0) { 938 /* --- 39 unchanged lines hidden --- |