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Fixed chmod and friends.

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This commit is contained in:
Eric Andersen 1999-10-20 07:03:36 +00:00
parent b9b421c186
commit ce8f3b9933
3 changed files with 110 additions and 209 deletions
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6
Makefile
View File

@ -5,7 +5,7 @@ BUILDTIME=$(shell date "+%Y%m%d-%H%M")
# Comment out the following to make a debuggable build
# Leave this off for production use.
#DODEBUG=true
DODEBUG=true
#This will choke on a non-debian system
ARCH=`uname -m | sed -e 's/i.86/i386/' | sed -e 's/sparc.*/sparc/'`
@ -19,7 +19,7 @@ ifeq ($(DODEBUG),true)
else
CFLAGS=-Wall -Os -fomit-frame-pointer -fno-builtin -D_GNU_SOURCE
LDFLAGS= -s
STRIP= strip --remove-section=.note --remove-section=.comment
STRIP= strip --remove-section=.note --remove-section=.comment $(PROG)
endif
ifndef $(prefix)
@ -36,7 +36,7 @@ all: busybox links
busybox: $(OBJECTS)
$(CC) $(LDFLAGS) -o $(PROG) $(OBJECTS) $(LIBRARIES)
$(STRIP) $(PROG)
$(STRIP)
links:
- ./busybox.mkll | sort >busybox.links

267
chmod_chown_chgrp.c
View File

@ -25,8 +25,8 @@
#include "internal.h"
static int uid=-1;
static int gid=0;
static uid_t uid=-1;
static gid_t gid=-1;
static int whichApp;
static char* invocationName=NULL;
static mode_t mode=0644;
@ -48,18 +48,70 @@ static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
"\t-R\tchange files and directories recursively.\n";
uid_t my_getid(const char *filename, const char *name)
{
FILE *stream;
char *rname, *start, *end, buf[128];
uid_t rid;
stream=fopen(filename,"r");
while (fgets (buf, 128, stream) != NULL) {
if (buf[0] == '#')
continue;
start = buf;
end = strchr (start, ':');
if (end == NULL)
continue;
*end = '\0';
rname = start;
start = end + 1;
end = strchr (start, ':');
if (end == NULL)
continue;
start = end + 1;
rid = (uid_t) strtol (start, &end, 10);
if (end == start)
continue;
if (name) {
if (0 == strcmp(rname, name))
return( rid);
}
}
fclose(stream);
return (-1);
}
uid_t
my_getpwnam(char *name)
{
return my_getid("/etc/passwd", name);
}
gid_t
my_getgrnam(char *name)
{
return my_getid("/etc/group", name);
}
static int fileAction(const char *fileName, struct stat* statbuf)
{
switch (whichApp) {
case CHGRP_APP:
case CHOWN_APP:
if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statbuf->st_uid), gid) < 0)
if (chown(fileName, (whichApp==CHOWN_APP)? uid : statbuf->st_uid,
(gid==-1)? statbuf->st_gid : gid) == 0) {
return( TRUE);
}
break;
case CHMOD_APP:
fprintf(stderr, "%s, %d\n", fileName, mode);
if (chmod(fileName, mode))
if (chmod(fileName, mode) == 0)
return( TRUE);
break;
}
perror(fileName);
return( FALSE);
@ -67,8 +119,6 @@ static int fileAction(const char *fileName, struct stat* statbuf)
int chmod_chown_chgrp_main(int argc, char **argv)
{
struct group *grp;
struct passwd *pwd;
int recursiveFlag=FALSE;
char *groupName;
@ -104,31 +154,33 @@ int chmod_chown_chgrp_main(int argc, char **argv)
fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
exit( FALSE);
}
//mode &= andWithMode;
fprintf(stderr, "mode %d\n", mode);
} else {
/* Find the selected group */
groupName = strchr(*argv, '.');
if ( whichApp==TRUE && groupName )
*groupName++ = '\0';
else
if ( whichApp==CHGRP_APP && groupName ) {
groupName = *argv;
grp = getgrnam(groupName);
if (grp == NULL) {
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else {
groupName = strchr(*argv, '.');
if (groupName) {
*groupName++ = '\0';
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else
gid = -1;
}
gid = grp->gr_gid;
/* Find the selected user (if appropriate) */
if (whichApp==TRUE) {
pwd = getpwnam(*argv);
if (pwd == NULL) {
if (whichApp==CHOWN_APP) {
uid = my_getpwnam(*argv);
if (uid == -1) {
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
exit( FALSE);
}
uid = pwd->pw_uid;
}
}
@ -142,173 +194,10 @@ int chmod_chown_chgrp_main(int argc, char **argv)
exit( FALSE);
}
exit(TRUE);
bad_group:
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
}
#ifdef fooo
#include "internal.h"
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <stdio.h>
int my_getid(const char *filename, const char *name, uid_t *id)
{
FILE *stream;
uid_t rid;
char *rname, *start, *end, buf[128];
stream=fopen(filename,"r");
while (fgets (buf, 128, stream) != NULL) {
if (buf[0] == '#')
continue;
start = buf;
end = strchr (start, ':');
if (end == NULL)
continue;
*end = '\0';
rname = start;
start = end + 1;
end = strchr (start, ':');
if (end == NULL)
continue;
start = end + 1;
rid = (uid_t) strtol (start, &end, 10);
if (end == start)
continue;
if (name) {
if (0 == strcmp(rname, name)) {
*id=rid;
return 0;
}
} else {
if ( *id == rid )
return 0;
}
}
fclose(stream);
return -1;
}
int
my_getpwuid(uid_t *uid)
{
return my_getid("/etc/passwd", NULL, uid);
}
int
my_getpwnam(char *name, uid_t *uid)
{
return my_getid("/etc/passwd", name, uid);
}
int
my_getgrgid(gid_t *gid)
{
return my_getid("/etc/group", NULL, gid);
}
int
my_getgrnam(char *name, gid_t *gid)
{
return my_getid("/etc/group", name, gid);
}
const char chown_usage[] = "chown [-R] user-name file [file ...]\n"
"\n\tThe group list is kept in the file /etc/groups.\n\n"
"\t-R:\tRecursively change the mode of all files and directories\n"
"\t\tunder the argument directory.";
int
parse_user_name(const char * s, struct FileInfo * i)
{
char * dot = strchr(s, '.');
char * end = NULL;
uid_t id = 0;
if (! dot )
dot = strchr(s, ':');
if ( dot )
*dot = '\0';
if ( my_getpwnam(s,&id) == -1 ) {
id = strtol(s,&end,10);
if ((*end != '\0') || ( my_getpwuid(&id) == -1 )) {
fprintf(stderr, "%s: no such user.\n", s);
return 1;
}
}
i->userID = id;
if ( dot ) {
if ( my_getgrnam(++dot,&id) == -1 ) {
id = strtol(dot,&end,10);
if ((*end != '\0') || ( my_getgrgid(&id) == -1 )) {
fprintf(stderr, "%s: no such group.\n", dot);
return 1;
}
}
i->groupID = id;
i->changeGroupID = 1;
}
return 0;
}
extern int
chown_main(struct FileInfo * i, int argc, char * * argv)
{
int status;
while ( argc >= 3 && strcmp("-R", argv[1]) == 0 ) {
i->recursive = 1;
argc--;
argv++;
}
if ( (status = parse_user_name(argv[1], i)) != 0 )
return status;
argv++;
argc--;
i->changeUserID = 1;
i->complainInPostProcess = 1;
return monadic_main(i, argc, argv);
}
#endif

46
utility.c
View File

@ -32,7 +32,7 @@
#include <utime.h>
#include <sys/stat.h>
#include <unistd.h>
#include <ctype.h>
/* volatile so gcc knows this is the enod of the line */
volatile void usage(const char *usage)
@ -558,13 +558,17 @@ extern void createPath (const char *name, int mode)
#if defined (BB_CHMOD_CHOWN_CHGRP) || defined (BB_MKDIR)
/* [ugoa]{+|-|=}[rwxstl] */
extern int parse_mode( const char* s, mode_t* theMode)
/* [ugoa]{+|-|=}[rwxst] */
extern int
parse_mode( const char* s, mode_t* theMode)
{
mode_t or;
mode_t and;
mode_t andMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
mode_t orMode = 0;
mode_t mode = 0;
mode_t groups = S_ISVTX;
mode_t groups = 0;
char type;
char c;
@ -572,7 +576,7 @@ extern int parse_mode( const char* s, mode_t* theMode)
for ( ; ; ) {
switch ( c = *s++ ) {
case '\0':
return (FALSE);
return -1;
case 'u':
groups |= S_ISUID|S_IRWXU;
continue;
@ -589,13 +593,15 @@ extern int parse_mode( const char* s, mode_t* theMode)
case '=':
case '-':
type = c;
if ( groups == S_ISVTX ) /* The default is "all" */
if ( groups == 0 ) /* The default is "all" */
groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
break;
default:
if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) {
and = 0;
or = strtol(--s, 0, 010);
if ( isdigit(c) && c >= '0' && c <= '7' && mode == 0 && groups == 0 ) {
andMode = 0;
orMode = strtol(--s, NULL, 8);
*theMode &= andMode;
*theMode |= orMode;
return (TRUE);
}
else
@ -621,28 +627,34 @@ extern int parse_mode( const char* s, mode_t* theMode)
mode |= S_IXGRP|S_ISUID|S_ISGID;
continue;
case 't':
mode |= S_ISVTX;
mode |= 0;
continue;
default:
return (FALSE);
*theMode &= andMode;
*theMode |= orMode;
return( TRUE);
}
break;
}
switch ( type ) {
case '=':
and &= ~(groups);
andMode &= ~(groups);
/* fall through */
case '+':
or |= mode & groups;
orMode |= mode & groups;
break;
case '-':
and &= ~(mode & groups);
or &= and;
andMode &= ~(mode & groups);
orMode &= andMode;
break;
}
} while ( c == ',' );
*theMode &= andMode;
*theMode |= orMode;
return (TRUE);
}
#endif