br0kenpixel/Magisk
1
0
Fork 0
mirror of https://github.com/topjohnwu/Magisk.git synced 2025-09-06 06:36:58 +00:00
Code Issues Packages Projects Releases 1 Wiki Activity

Add new file operations

Browse Source
This commit is contained in:
topjohnwu
2017-10-12 02:57:18 +08:00
parent df7eaa5598
commit 25bdbcf526
9 changed files with 326 additions and 224 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jni/utils/misc.c
-99
View File
@@ -6,19 +6,14 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
#include <pwd.h>
#include <signal.h>
#include <errno.h>
#include <sched.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <selinux/selinux.h>
#include "logging.h"
#include "utils.h"
@@ -281,27 +276,6 @@ int exec_command(int err, int *fd, void (*setupenv)(struct vector*), const char
return pid;
}
int mkdir_p(const char *pathname, mode_t mode) {
char *path = strdup(pathname), *p;
errno = 0;
for (p = path + 1; *p; ++p) {
if (*p == '/') {
*p = '\0';
if (mkdir(path, mode) == -1) {
if (errno != EEXIST)
return -1;
}
*p = '/';
}
}
if (mkdir(path, mode) == -1) {
if (errno != EEXIST)
return -1;
}
free(path);
return 0;
}
int bind_mount(const char *from, const char *to) {
int ret = xmount(from, to, NULL, MS_BIND, NULL);
#ifdef MAGISK_DEBUG
@@ -316,79 +290,6 @@ int open_new(const char *filename) {
return xopen(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
}
int cp_afc(const char *source, const char *target) {
struct stat buf;
xlstat(source, &buf);
if (S_ISDIR(buf.st_mode)) {
DIR *dir;
struct dirent *entry;
char *s_path, *t_path;
if (!(dir = xopendir(source)))
return 1;
s_path = xmalloc(PATH_MAX);
t_path = xmalloc(PATH_MAX);
mkdir_p(target, 0755);
clone_attr(source, target);
while ((entry = xreaddir(dir))) {
if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
continue;
snprintf(s_path, PATH_MAX, "%s/%s", source, entry->d_name);
snprintf(t_path, PATH_MAX, "%s/%s", target, entry->d_name);
cp_afc(s_path, t_path);
}
free(s_path);
free(t_path);
closedir(dir);
} else{
unlink(target);
if (S_ISREG(buf.st_mode)) {
int sfd, tfd;
sfd = xopen(source, O_RDONLY);
tfd = xopen(target, O_WRONLY | O_CREAT | O_TRUNC);
xsendfile(tfd, sfd, NULL, buf.st_size);
fclone_attr(sfd, tfd);
close(sfd);
close(tfd);
} else if (S_ISLNK(buf.st_mode)) {
char buffer[PATH_MAX];
xreadlink(source, buffer, sizeof(buffer));
xsymlink(buffer, target);
clone_attr(source, target);
} else {
return 1;
}
}
return 0;
}
void clone_attr(const char *source, const char *target) {
struct stat buf;
lstat(target, &buf);
chmod(target, buf.st_mode & 0777);
chown(target, buf.st_uid, buf.st_gid);
char *con;
lgetfilecon(source, &con);
lsetfilecon(target, con);
free(con);
}
void fclone_attr(const int sourcefd, const int targetfd) {
struct stat buf;
fstat(sourcefd, &buf);
fchmod(targetfd, buf.st_mode & 0777);
fchown(targetfd, buf.st_uid, buf.st_gid);
char *con;
fgetfilecon(sourcefd, &con);
fsetfilecon(targetfd, con);
free(con);
}
void get_client_cred(int fd, struct ucred *cred) {
socklen_t ucred_length = sizeof(*cred);
if(getsockopt(fd, SOL_SOCKET, SO_PEERCRED, cred, &ucred_length))