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This commit is contained in:
Eric Andersen
1999-10-13 18:56:42 +00:00
parent 21943ce641
commit 1b61f41f57
10 changed files with 526 additions and 205 deletions
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193
coreutils/chown.c
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@@ -1,5 +1,5 @@
/*
* Mini chown/chgrp implementation for busybox
* Mini chown/chmod/chgrp implementation for busybox
*
* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
*
@@ -27,33 +27,150 @@
static int uid=-1;
static int gid=0;
static int chownApp;
static int whichApp;
static char* invocationName=NULL;
static mode_t mode=7777;
#define CHGRP_APP 1
#define CHOWN_APP 2
#define CHMOD_APP 3
static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
"Change the group membership of each FILE to GROUP.\n"
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
"one or more of the letters rwxst.\n\n"
"\t-R\tchange files and directories recursively.\n";
static int fileAction(const char *fileName)
{
struct stat statBuf;
if ((stat(fileName, &statBuf) < 0) ||
(chown(fileName,
((chownApp==TRUE)? uid: statBuf.st_uid),
gid) < 0)) {
perror(fileName);
return( FALSE);
if (stat(fileName, &statBuf) < 0) {
switch (whichApp) {
case CHGRP_APP:
case CHOWN_APP:
if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statBuf.st_uid), gid) < 0)
return( TRUE);
case CHMOD_APP:
if (chmod(fileName, mode))
return( TRUE);
}
}
return( TRUE);
perror(fileName);
return( FALSE);
}
int chown_main(int argc, char **argv)
/* [ugoa]{+|-|=}[rwxstl] */
int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute)
{
mode_t mode = 0;
mode_t groups = S_ISVTX;
char type;
char c;
do {
for ( ; ; ) {
switch ( c = *s++ ) {
case '\0':
return (FALSE);
case 'u':
groups |= S_ISUID|S_IRWXU;
continue;
case 'g':
groups |= S_ISGID|S_IRWXG;
continue;
case 'o':
groups |= S_IRWXO;
continue;
case 'a':
groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
continue;
case '+':
case '=':
case '-':
type = c;
if ( groups == S_ISVTX ) /* 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);
return (TRUE);
}
else
return (FALSE);
}
break;
}
while ( (c = *s++) != '\0' ) {
switch ( c ) {
case ',':
break;
case 'r':
mode |= S_IRUSR|S_IRGRP|S_IROTH;
continue;
case 'w':
mode |= S_IWUSR|S_IWGRP|S_IWOTH;
continue;
case 'x':
mode |= S_IXUSR|S_IXGRP|S_IXOTH;
continue;
case 's':
if ( group_execute != 0 && (groups & S_IRWXG) ) {
if ( *group_execute < 0 )
return (FALSE);
if ( type != '-' ) {
mode |= S_IXGRP;
*group_execute = 1;
}
}
mode |= S_ISUID|S_ISGID;
continue;
case 'l':
if ( *group_execute > 0 )
return (FALSE);
if ( type != '-' ) {
*and &= ~S_IXGRP;
*group_execute = -1;
}
mode |= S_ISGID;
groups |= S_ISGID;
continue;
case 't':
mode |= S_ISVTX;
continue;
default:
return (FALSE);
}
break;
}
switch ( type ) {
case '=':
*and &= ~(groups);
/* fall through */
case '+':
*or |= mode & groups;
break;
case '-':
*and &= ~(mode & groups);
*or &= *and;
break;
}
} while ( c == ',' );
return (TRUE);
}
int chmod_chown_chgrp_main(int argc, char **argv)
{
struct group *grp;
struct passwd *pwd;
@@ -61,11 +178,11 @@ int chown_main(int argc, char **argv)
char *groupName;
chownApp = (strcmp(*argv, "chown")==0)? TRUE : FALSE;
whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
if (argc < 2) {
fprintf(stderr, "Usage: %s %s", *argv,
(chownApp==TRUE)? chown_usage : chgrp_usage);
(whichApp==TRUE)? chown_usage : chgrp_usage);
exit( FALSE);
}
invocationName=*argv;
@@ -86,29 +203,40 @@ int chown_main(int argc, char **argv)
argv++;
}
/* Find the selected group */
groupName = strchr(*argv, '.');
if ( chownApp==TRUE && groupName )
*groupName++ = '\0';
else
groupName = *argv;
grp = getgrnam(groupName);
if (grp == NULL) {
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
}
gid = grp->gr_gid;
/* Find the selected user (if appropriate) */
if (chownApp==TRUE) {
pwd = getpwnam(*argv);
if (pwd == NULL) {
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
if ( whichApp == CHMOD_APP ) {
/* Find the specified modes */
if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) {
fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
exit( FALSE);
}
uid = pwd->pw_uid;
}
mode &= andWithMode;
mode |= orWithMode;
} else {
/* Find the selected group */
groupName = strchr(*argv, '.');
if ( whichApp==TRUE && groupName )
*groupName++ = '\0';
else
groupName = *argv;
grp = getgrnam(groupName);
if (grp == NULL) {
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
}
gid = grp->gr_gid;
/* Find the selected user (if appropriate) */
if (whichApp==TRUE) {
pwd = getpwnam(*argv);
if (pwd == NULL) {
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
exit( FALSE);
}
uid = pwd->pw_uid;
}
}
/* Ok, ready to do the deed now */
if (argc <= 1) {
fprintf(stderr, "%s: too few arguments", invocationName);
@@ -120,3 +248,4 @@ int chown_main(int argc, char **argv)
}
exit(TRUE);
}