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explain unprivileged block device mount failure with external FUSE

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szaka 2008-02-16 15:21:56 +00:00
parent fca849d365
commit 6ab2973445
1 changed files with 20 additions and 4 deletions
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24
src/ntfs-3g.c
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@ -179,9 +179,16 @@ static int drop_privs(void) { return 0; }
static int restore_privs(void) { return 0; }
static const char *setuid_msg =
"Mount is denied because setuid and setgid root ntfs-3g is insecure with an\n"
"Mount is denied because setuid and setgid root ntfs-3g is insecure with the\n"
"external FUSE library. Either remove the setuid/setgid bit from the binary\n"
"or rebuild NTFS-3G with integrated FUSE support.\n";
"or rebuild NTFS-3G with integrated FUSE support and make it setuid root.\n"
"Please see more information at http://ntfs-3g.org/support.html#unprivileged\n";
static const char *unpriv_fuseblk_msg =
"Unprivileged user can not mount NTFS block devices using the external FUSE\n"
"library. Either mount the volume as root, or rebuild NTFS-3G with integrated\n"
"FUSE support and make it setuid root. Please see more information at\n"
"http://ntfs-3g.org/support.html#unprivileged\n";
#endif
@ -2247,8 +2254,10 @@ int main(int argc, char *argv[])
return NTFS_VOLUME_SYNTAX_ERROR;
}
if (ntfs_fuse_init())
return NTFS_VOLUME_OUT_OF_MEMORY;
if (ntfs_fuse_init()) {
err = NTFS_VOLUME_OUT_OF_MEMORY;
goto err2;
}
parsed_options = parse_mount_options(opts.options);
if (!parsed_options) {
@ -2281,6 +2290,12 @@ int main(int argc, char *argv[])
if (S_ISBLK(sbuf.st_mode) && (fstype != FSTYPE_FUSE))
ctx->blkdev = TRUE;
#ifndef FUSE_INTERNAL
if (getuid() && ctx->blkdev) {
ntfs_log_error("%s", unpriv_fuseblk_msg);
goto err2;
}
#endif
err = ntfs_open(opts.device);
if (err)
goto err_out;
@ -2311,6 +2326,7 @@ int main(int argc, char *argv[])
fuse_destroy(fh);
err_out:
utils_mount_error(opts.device, opts.mnt_point, err);
err2:
ntfs_close();
free(ctx);
free(parsed_options);