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Explicitly set the file mode of I/O log files so the mode is not

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affected by the invoking user's umask.
This commit is contained in:
Todd C. Miller
2017-03-21 13:54:27 -06:00
parent 8d57491dc1
commit 1bd90d8fff
2 changed files with 16 additions and 3 deletions
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9
plugins/sudoers/iolog.c
View File

@@ -103,10 +103,10 @@ io_mkdirs(char *path)
}
if (ok) {
if (S_ISDIR(sb.st_mode)) {
if ((sb.st_mode & ALLPERMS) != iolog_dirmode)
ignore_result(chmod(path, iolog_dirmode));
if (sb.st_uid != iolog_uid || sb.st_gid != iolog_gid)
ignore_result(chown(path, iolog_uid, iolog_gid));
if ((sb.st_mode & ALLPERMS) != iolog_dirmode)
ignore_result(chmod(path, iolog_dirmode));
} else {
sudo_warnx(U_("%s exists but is not a directory (0%o)"),
path, (unsigned int) sb.st_mode);
@@ -130,6 +130,7 @@ io_mkdirs(char *path)
ok = false;
} else {
ignore_result(chown(path, iolog_uid, iolog_gid));
ignore_result(chmod(path, iolog_dirmode));
}
}
if (uid_changed) {
@@ -374,6 +375,7 @@ io_nextid(char *iolog_dir, char *iolog_dir_fallback, char sessid[7])
}
sudo_lock_file(fd, SUDO_LOCK);
ignore_result(fchown(fd, iolog_uid, iolog_gid));
ignore_result(fchmod(fd, iolog_filemode));
/*
* If there is no seq file in iolog_dir and a fallback dir was
@@ -397,6 +399,7 @@ io_nextid(char *iolog_dir, char *iolog_dir_fallback, char sessid[7])
}
if (fd2 != -1) {
ignore_result(fchown(fd2, iolog_uid, gid));
ignore_result(fchmod(fd2, iolog_filemode));
nread = read(fd2, buf, sizeof(buf) - 1);
if (nread > 0) {
if (buf[nread - 1] == '\n')
@@ -522,6 +525,7 @@ open_io_fd(char *pathbuf, size_t len, struct io_log_file *iol, bool docompress)
}
if (fd != -1) {
ignore_result(fchown(fd, iolog_uid, iolog_gid));
ignore_result(fchmod(fd, iolog_filemode));
(void)fcntl(fd, F_SETFD, FD_CLOEXEC);
#ifdef HAVE_ZLIB_H
if (docompress)
@@ -764,6 +768,7 @@ write_info_log(char *pathbuf, size_t len, struct iolog_details *details,
debug_return_bool(false);
}
ignore_result(fchown(fd, iolog_uid, iolog_gid));
ignore_result(fchmod(fd, iolog_filemode));
fprintf(fp, "%lld:%s:%s:%s:%s:%d:%d\n%s\n%s", (long long)now->tv_sec,
details->user ? details->user : "unknown", details->runas_pw->pw_name,

10
plugins/sudoers/mkdir_parents.c
View File

@@ -53,6 +53,7 @@ sudo_mkdir_parents(char *path, uid_t uid, gid_t gid, mode_t mode, bool quiet)
if (mkdir(path, mode) == 0) {
if (uid != (uid_t)-1 && gid != (gid_t)-1)
ignore_result(chown(path, uid, gid));
ignore_result(chmod(path, mode));
} else {
if (errno != EEXIST) {
if (!quiet)
@@ -65,7 +66,14 @@ sudo_mkdir_parents(char *path, uid_t uid, gid_t gid, mode_t mode, bool quiet)
sudo_warn(U_("unable to stat %s"), path);
goto bad;
}
if (!S_ISDIR(sb.st_mode)) {
if (S_ISDIR(sb.st_mode)) {
if (uid != (uid_t)-1 && gid != (gid_t)-1) {
if (sb.st_uid != uid || sb.st_gid != uid)
ignore_result(chown(path, uid, uid));
}
if ((sb.st_mode & ALLPERMS) != mode)
ignore_result(chmod(path, mode));
} else {
if (!quiet)
sudo_warnx(U_("%s exists but is not a directory (0%o)"),
path, (unsigned int) sb.st_mode);