static int fuse_mount_sys (const char *mountpoint, char *fsname, unsigned long mountflags, char *mnt_param, int fd) { int ret = -1; unsigned mounted = 0; char *mnt_param_mnt = NULL; char *fstype = "fuse.glusterfs"; char *source = fsname; ret = asprintf (&mnt_param_mnt, "%s,fd=%i,rootmode=%o,user_id=%i,group_id=%i", mnt_param, fd, S_IFDIR, getuid (), getgid ()); if (ret == -1) { GFFUSE_LOGERR ("Out of memory"); goto out; } #ifdef __FreeBSD__ struct iovec *iov = NULL; int iovlen = 0; build_iovec (&iov, &iovlen, "fstype", "fusefs", -1); build_iovec (&iov, &iovlen, "subtype", "glusterfs", -1); build_iovec (&iov, &iovlen, "fspath", mountpoint, -1); build_iovec (&iov, &iovlen, "from", "/dev/fuse", -1); build_iovec (&iov, &iovlen, "volname", source, -1); build_iovec_argf (&iov, &iovlen, "fd", "%d", fd); build_iovec_argf (&iov, &iovlen, "user_id", "%d", getuid()); build_iovec_argf (&iov, &iovlen, "group_id", "%d", getgid()); ret = nmount (iov, iovlen, mountflags); #else ret = mount (source, mountpoint, fstype, mountflags, mnt_param_mnt); #endif /* __FreeBSD__ */ #ifdef GF_LINUX_HOST_OS if (ret == -1 && errno == ENODEV) { /* fs subtype support was added by 79c0b2df aka v2.6.21-3159-g79c0b2d. Probably we have an older kernel ... */ fstype = "fuse"; ret = asprintf (&source, "glusterfs#%s", fsname); if (ret == -1) { GFFUSE_LOGERR ("Out of memory"); goto out; } ret = mount (source, mountpoint, fstype, mountflags, mnt_param_mnt); } #endif /* GF_LINUX_HOST_OS */ if (ret == -1) goto out; else mounted = 1; #ifdef GF_LINUX_HOST_OS if (geteuid () == 0) { char *newmnt = fuse_mnt_resolve_path ("fuse", mountpoint); char *mnt_param_mtab = NULL; if (!newmnt) { ret = -1; goto out; } ret = asprintf (&mnt_param_mtab, "%s%s", mountflags & MS_RDONLY ? "ro," : "", mnt_param); if (ret == -1) GFFUSE_LOGERR ("Out of memory"); else { ret = fuse_mnt_add_mount ("fuse", source, newmnt, fstype, mnt_param_mtab); FREE (mnt_param_mtab); } FREE (newmnt); if (ret == -1) { GFFUSE_LOGERR ("failed to add mtab entry"); goto out; } } #endif /* GF_LINUX_HOST_OS */ out: if (ret == -1) { GFFUSE_LOGERR("ret = -1\n"); if (mounted) umount2 (mountpoint, 2); /* lazy umount */ } FREE (mnt_param_mnt); if (source != fsname) FREE (source); return ret; }
static int fuse_mount_sys(const char *mnt, struct mount_opts *mo, const char *mnt_opts) { char tmp[128]; const char *devname = "/dev/fuse"; char *source = NULL; char *type = NULL; struct stat stbuf; int fd; int res; if (!mnt) { fprintf(stderr, "fuse: missing mountpoint\n"); return -1; } res = lstat(mnt, &stbuf); if (res == -1) { fprintf(stderr ,"fuse: failed to access mountpoint %s: %s\n", mnt, strerror(errno)); return -1; } if (!mo->nonempty) { res = fuse_mnt_check_empty("fuse", mnt, stbuf.st_mode, stbuf.st_size); if (res == -1) return -1; } fd = open(devname, O_RDWR); if (fd == -1) { if (errno == ENODEV || errno == ENOENT) fprintf(stderr, "fuse: device not found, try 'modprobe fuse' first\n"); else fprintf(stderr, "fuse: failed to open %s: %s\n", devname, strerror(errno)); return -1; } snprintf(tmp, sizeof(tmp), "fd=%i,rootmode=%o,user_id=%i,group_id=%i", fd, stbuf.st_mode & S_IFMT, getuid(), getgid()); res = fuse_opt_add_opt(&mo->kernel_opts, tmp); if (res == -1) goto out_close; source = malloc((mo->fsname ? strlen(mo->fsname) : 0) + (mo->subtype ? strlen(mo->subtype) : 0) + strlen(devname) + 32); type = malloc((mo->subtype ? strlen(mo->subtype) : 0) + 32); if (!type || !source) { fprintf(stderr, "fuse: failed to allocate memory\n"); goto out_close; } strcpy(type, mo->blkdev ? "fuseblk" : "fuse"); if (mo->subtype) { strcat(type, "."); strcat(type, mo->subtype); } strcpy(source, mo->fsname ? mo->fsname : (mo->subtype ? mo->subtype : devname)); #ifdef __SOLARIS__ res = mount(source, mnt, MS_OPTIONSTR|mo->flags, type, NULL, 0, mo->kernel_opts, MAX_MNTOPT_STR); #else res = mount(source, mnt, type, mo->flags, mo->kernel_opts); #endif /* __SOLARIS__ */ #ifdef __SOLARIS__ if (res == -1 && errno == EINVAL && mo->subtype) { #else if (res == -1 && errno == ENODEV && mo->subtype) { #endif /* Probably missing subtype support */ strcpy(type, mo->blkdev ? "fuseblk" : "fuse"); if (mo->fsname) { if (!mo->blkdev) sprintf(source, "%s#%s", mo->subtype, mo->fsname); } else { strcpy(source, type); } #ifdef __SOLARIS__ res = mount(source, mnt, MS_OPTIONSTR|mo->flags, type, NULL, 0, mo->kernel_opts, MAX_MNTOPT_STR); #else res = mount(source, mnt, type, mo->flags, mo->kernel_opts); #endif /* __SOLARIS__ */ } if (res == -1) { /* * Maybe kernel doesn't support unprivileged mounts, in this * case try falling back to fusermount */ if (errno == EPERM) { res = -2; } else { int errno_save = errno; if (mo->blkdev && errno == ENODEV && !fuse_mnt_check_fuseblk()) fprintf(stderr, "fuse: 'fuseblk' support missing\n"); else fprintf(stderr, "fuse: mount failed: %s\n", strerror(errno_save)); } goto out_close; } #ifndef __SOLARIS__ if (geteuid() == 0) { char *newmnt = fuse_mnt_resolve_path("fuse", mnt); res = -1; if (!newmnt) goto out_umount; res = fuse_mnt_add_mount("fuse", source, newmnt, type, mnt_opts); free(newmnt); if (res == -1) goto out_umount; } #endif /* __SOLARIS__ */ return fd; out_umount: umount2(mnt, 2); /* lazy umount */ out_close: free(type); free(source); close(fd); return res; } static int get_mnt_flag_opts(char **mnt_optsp, int flags) { int i; if (!(flags & MS_RDONLY) && fuse_opt_add_opt(mnt_optsp, "rw") == -1) return -1; for (i = 0; mount_flags[i].opt != NULL; i++) { if (mount_flags[i].on && (flags & mount_flags[i].flag) && fuse_opt_add_opt(mnt_optsp, mount_flags[i].opt) == -1) return -1; } return 0; }
static int add_mount(const char *source, const char *mnt, const char *type, const char *opts) { return fuse_mnt_add_mount(progname, source, mnt, type, opts); }
static int fuse_mount_sys(const char *mnt, struct mount_opts *mo, const char *mnt_opts) { char tmp[128]; const char *devname = "/dev/fuse"; char *source = NULL; char *type = NULL; struct stat stbuf; int fd; int res; if (!mnt) { fprintf(stderr, "fuse: missing mountpoint parameter\n"); return -1; } res = stat(mnt, &stbuf); if (res == -1) { fprintf(stderr ,"fuse: failed to access mountpoint %s: %s\n", mnt, strerror(errno)); return -1; } if (!mo->nonempty) { res = fuse_mnt_check_empty("fuse", mnt, stbuf.st_mode, stbuf.st_size); if (res == -1) return -1; } if (mo->auto_unmount) { /* Tell the caller to fallback to fusermount because auto-unmount does not work otherwise. */ return -2; } fd = open(devname, O_RDWR); if (fd == -1) { if (errno == ENODEV || errno == ENOENT) fprintf(stderr, "fuse: device not found, try 'modprobe fuse' first\n"); else fprintf(stderr, "fuse: failed to open %s: %s\n", devname, strerror(errno)); return -1; } snprintf(tmp, sizeof(tmp), "fd=%i,rootmode=%o,user_id=%i,group_id=%i", fd, stbuf.st_mode & S_IFMT, getuid(), getgid()); res = fuse_opt_add_opt(&mo->kernel_opts, tmp); if (res == -1) goto out_close; source = malloc((mo->fsname ? strlen(mo->fsname) : 0) + (mo->subtype ? strlen(mo->subtype) : 0) + strlen(devname) + 32); type = malloc((mo->subtype ? strlen(mo->subtype) : 0) + 32); if (!type || !source) { fprintf(stderr, "fuse: failed to allocate memory\n"); goto out_close; } strcpy(type, mo->blkdev ? "fuseblk" : "fuse"); if (mo->subtype) { strcat(type, "."); strcat(type, mo->subtype); } strcpy(source, mo->fsname ? mo->fsname : (mo->subtype ? mo->subtype : devname)); res = mount(source, mnt, type, mo->flags, mo->kernel_opts); if (res == -1 && errno == ENODEV && mo->subtype) { /* Probably missing subtype support */ strcpy(type, mo->blkdev ? "fuseblk" : "fuse"); if (mo->fsname) { if (!mo->blkdev) sprintf(source, "%s#%s", mo->subtype, mo->fsname); } else { strcpy(source, type); } res = mount(source, mnt, type, mo->flags, mo->kernel_opts); } if (res == -1) { /* * Maybe kernel doesn't support unprivileged mounts, in this * case try falling back to fusermount */ if (errno == EPERM) { res = -2; } else { int errno_save = errno; if (mo->blkdev && errno == ENODEV && !fuse_mnt_check_fuseblk()) fprintf(stderr, "fuse: 'fuseblk' support missing\n"); else fprintf(stderr, "fuse: mount failed: %s\n", strerror(errno_save)); } goto out_close; } #ifndef __NetBSD__ #ifndef IGNORE_MTAB if (geteuid() == 0) { char *newmnt = fuse_mnt_resolve_path("fuse", mnt); res = -1; if (!newmnt) goto out_umount; res = fuse_mnt_add_mount("fuse", source, newmnt, type, mnt_opts); free(newmnt); if (res == -1) goto out_umount; } #endif /* IGNORE_MTAB */ #endif /* __NetBSD__ */ free(type); free(source); return fd; out_umount: umount2(mnt, 2); /* lazy umount */ out_close: free(type); free(source); close(fd); return res; }