diff options
Diffstat (limited to 'fsdev/virtfs-proxy-helper.c')
| -rw-r--r-- | fsdev/virtfs-proxy-helper.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/fsdev/virtfs-proxy-helper.c b/fsdev/virtfs-proxy-helper.c index 5cafcd7..d9511f4 100644 --- a/fsdev/virtfs-proxy-helper.c +++ b/fsdev/virtfs-proxy-helper.c @@ -26,6 +26,7 @@ #include "qemu/xattr.h" #include "9p-iov-marshal.h" #include "hw/9pfs/9p-proxy.h" +#include "hw/9pfs/9p-util.h" #include "fsdev/9p-iov-marshal.h" #define PROGNAME "virtfs-proxy-helper" @@ -339,6 +340,28 @@ static void resetugid(int suid, int sgid) } /* + * Open regular file or directory. Attempts to open any special file are + * rejected. + * + * returns file descriptor or -1 on error + */ +static int open_regular(const char *pathname, int flags, mode_t mode) +{ + int fd; + + fd = open(pathname, flags, mode); + if (fd < 0) { + return fd; + } + + if (close_if_special_file(fd) < 0) { + return -1; + } + + return fd; +} + +/* * send response in two parts * 1) ProxyHeader * 2) Response or error status @@ -682,7 +705,7 @@ static int do_create(struct iovec *iovec) if (ret < 0) { goto unmarshal_err_out; } - ret = open(path.data, flags, mode); + ret = open_regular(path.data, flags, mode); if (ret < 0) { ret = -errno; } @@ -707,7 +730,7 @@ static int do_open(struct iovec *iovec) if (ret < 0) { goto err_out; } - ret = open(path.data, flags); + ret = open_regular(path.data, flags, 0); if (ret < 0) { ret = -errno; } |