diff options
Diffstat (limited to 'example')
| -rw-r--r-- | example/passthrough_hp.cc | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/example/passthrough_hp.cc b/example/passthrough_hp.cc index 65377b9..040bc75 100644 --- a/example/passthrough_hp.cc +++ b/example/passthrough_hp.cc @@ -66,6 +66,10 @@ #include <unistd.h> #include <pthread.h> #include <limits.h> +#ifdef __FreeBSD__ +#include <fcntl.h> +#include <sys/user.h> +#endif // C++ includes #include <cstddef> @@ -248,6 +252,21 @@ static void sfs_getattr(fuse_req_t req, fuse_ino_t ino, fuse_file_info *fi) fuse_reply_attr(req, &attr, fs.timeout); } +static int with_fd_path(int fd, const std::function<int(const char*)>& f) +{ +#ifdef __FreeBSD__ + struct kinfo_file kf; + kf.kf_structsize = sizeof(kf); + int ret = fcntl(fd, F_KINFO, &kf); + if (ret == -1) + return ret; + return f (kf.kf_path); +#else // Linux + char procname[64]; + sprintf(procname, "/proc/self/fd/%i", fd); + return f(procname); +#endif +} static void do_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, int valid, struct fuse_file_info *fi) { @@ -259,9 +278,9 @@ static void do_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, if (fi) { res = fchmod(fi->fh, attr->st_mode); } else { - char procname[64]; - sprintf(procname, "/proc/self/fd/%i", ifd); - res = chmod(procname, attr->st_mode); + res = with_fd_path(ifd, [attr](const char* procname) { + return chmod(procname, attr->st_mode); + }); } if (res == -1) goto out_err; @@ -283,9 +302,9 @@ static void do_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, if (fi) { res = ftruncate(fi->fh, attr->st_size); } else { - char procname[64]; - sprintf(procname, "/proc/self/fd/%i", ifd); - res = truncate(procname, attr->st_size); + res = with_fd_path(ifd, [attr](const char* procname) { + return truncate(procname, attr->st_size); + }); } if (res == -1) goto out_err; @@ -312,9 +331,9 @@ static void do_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, res = futimens(fi->fh, tv); else { #ifdef HAVE_UTIMENSAT - char procname[64]; - sprintf(procname, "/proc/self/fd/%i", ifd); - res = utimensat(AT_FDCWD, procname, tv, 0); + res = with_fd_path(ifd, [&tv](const char* procname) { + return utimensat(AT_FDCWD, procname, tv, 0); + }); #else res = -1; errno = EOPNOTSUPP; @@ -1067,9 +1086,9 @@ static void sfs_open(fuse_req_t req, fuse_ino_t ino, fuse_file_info *fi) /* Unfortunately we cannot use inode.fd, because this was opened with O_PATH (so it doesn't allow read/write access). */ - char buf[64]; - sprintf(buf, "/proc/self/fd/%i", inode.fd); - auto fd = open(buf, fi->flags & ~O_NOFOLLOW); + auto fd = with_fd_path(inode.fd, [fi](const char* buf) { + return open(buf, fi->flags & ~O_NOFOLLOW); + }); if (fd == -1) { auto err = errno; if (err == ENFILE || err == EMFILE) |