diff options
Diffstat (limited to 'lib/libfuse/fuse_opt.c')
| -rw-r--r-- | lib/libfuse/fuse_opt.c | 146 |
1 files changed, 101 insertions, 45 deletions
diff --git a/lib/libfuse/fuse_opt.c b/lib/libfuse/fuse_opt.c index e1c065ea703..873b3380399 100644 --- a/lib/libfuse/fuse_opt.c +++ b/lib/libfuse/fuse_opt.c @@ -1,4 +1,4 @@ -/* $OpenBSD: fuse_opt.c,v 1.18 2017/01/04 12:01:22 stsp Exp $ */ +/* $OpenBSD: fuse_opt.c,v 1.19 2017/11/16 12:56:58 helg Exp $ */ /* * Copyright (c) 2013 Sylvestre Gallon <ccna.syl@gmail.com> * Copyright (c) 2013 Stefan Sperling <stsp@openbsd.org> @@ -25,6 +25,10 @@ #include "fuse_opt.h" #include "fuse_private.h" +#define IFUSE_OPT_DISCARD 0 +#define IFUSE_OPT_KEEP 1 +#define IFUSE_OPT_NEED_ANOTHER_ARG 2 + static void free_argv(char **argv, int argc) { @@ -222,57 +226,66 @@ static int parse_opt(const struct fuse_opt *o, const char *val, void *data, fuse_opt_proc_t f, struct fuse_args *arg) { - int found, ret, keyval; + int keyval; size_t idx; - ret = 0; - found = 0; - keyval = 0; + if (o == NULL) + return IFUSE_OPT_KEEP; - /* check if it is a key=value entry */ - idx = strcspn(val, "="); - if (idx != strlen(val)) { - idx++; - keyval = 1; - } + keyval = 0; for(; o->templ; o++) { - if ((keyval && strncmp(val, o->templ, idx) == 0) || - (!keyval && strcmp(val, o->templ) == 0)) { + /* check key=value or -p n */ + idx = strcspn(o->templ, "= "); + + if (strncmp(val, o->templ, idx) == 0) { + if (o->templ[idx] == '=') { + keyval = 1; + val = &val[idx + 1]; + } else if (o->templ[idx] == ' ') { + keyval = 1; + if (idx == strlen(val)) { + /* ask for next arg to be included */ + return IFUSE_OPT_NEED_ANOTHER_ARG; + } else if (strchr(o->templ, '%') != NULL) { + val = &val[idx]; + } + } + if (o->val == FUSE_OPT_KEY_DISCARD) - return (1); + return (IFUSE_OPT_DISCARD); + + if (o->val == FUSE_OPT_KEY_KEEP) + return (IFUSE_OPT_KEEP); if (FUSE_OPT_IS_OPT_KEY(o)) { - if (keyval) - ret = f(data, &val[idx], o->val, arg); - else - ret = f(data, val, o->val, arg); - } + if (f == NULL) + return IFUSE_OPT_KEEP; - if (o->off != ULONG_MAX && data && o->val >= 0) { - ret = f(data, val, o->val, arg); - int *addr = (int *)(data + o->off); - *addr = o->val; - ret = 0; + return f(data, val, o->val, arg); + } else if (data == NULL) { + return (-1); + } else if (strchr(o->templ, '%') == NULL) { + *((int *)(data + o->off)) = o->val; + } else if (strstr(o->templ, "%u") != NULL) { + *((unsigned int*)(data + o->off)) = atoi(val); + } else if (strstr(o->templ, "%lu") != NULL) { + *((unsigned long*)(data + o->off)) = + strtoul(val, NULL, 0); + } else if (strstr(o->templ, "%s") != NULL) { + *((char **)(data + o->off)) = strdup(val); + } else { + /* TODO other parameterised templates */ } - if (ret == -1) - return (ret); - if (ret == 1) - fuse_opt_add_arg(arg, val); - found++; - break; + return (IFUSE_OPT_DISCARD); } } - if (!found) { - ret = f(data, val, FUSE_OPT_KEY_OPT, arg); - if (ret == 1) - fuse_opt_add_arg(arg, val); - return (ret); - } + if (f != NULL) + return f(data, val, FUSE_OPT_KEY_OPT, arg); - return (ret); + return (IFUSE_OPT_KEEP); } /* @@ -287,11 +300,12 @@ fuse_opt_parse(struct fuse_args *args, void *data, const struct fuse_opt *opt, fuse_opt_proc_t f) { struct fuse_args outargs; - const char *arg; - int ret = 0; + const char *arg, *ap; + char *optlist, *tofree; + int ret; int i; - if (!f || !args || !args->argc || !args->argv) + if (!args || !args->argc || !args->argv) return (0); bzero(&outargs, sizeof(outargs)); @@ -299,28 +313,68 @@ fuse_opt_parse(struct fuse_args *args, void *data, for (i = 1; i < args->argc; i++) { arg = args->argv[i]; + ret = 0; /* not - and not -- */ if (arg[0] != '-') { - ret = f(data, arg, FUSE_OPT_KEY_NONOPT, &outargs); + if (f == NULL) + ret = IFUSE_OPT_KEEP; + else + ret = f(data, arg, FUSE_OPT_KEY_NONOPT, &outargs); - if (ret == 1) + if (ret == IFUSE_OPT_KEEP) fuse_opt_add_arg(&outargs, arg); if (ret == -1) goto err; } else if (arg[1] == 'o') { if (arg[2]) arg += 2; /* -ofoo,bar */ - else - arg = args->argv[++i]; + else { + if (++i >= args->argc) + goto err; - ret = parse_opt(opt, arg, data, f, &outargs); + arg = args->argv[i]; + } + + tofree = optlist = strdup(arg); + if (optlist == NULL) + goto err; + + while ((ap = strsep(&optlist, ",")) != NULL && + ret != -1) { + ret = parse_opt(opt, ap, data, f, &outargs); + if (ret == IFUSE_OPT_KEEP) { + fuse_opt_add_arg(&outargs, "-o"); + fuse_opt_add_arg(&outargs, ap); + } + } + + free(tofree); if (ret == -1) goto err; } else { ret = parse_opt(opt, arg, data, f, &outargs); + if (ret == IFUSE_OPT_KEEP) + fuse_opt_add_arg(&outargs, arg); + else if (ret == IFUSE_OPT_NEED_ANOTHER_ARG) { + /* arg needs a value */ + if (++i >= args->argc) { + fprintf(stderr, "fuse: missing argument after %s\n", arg); + goto err; + } + + if (asprintf(&tofree, "%s%s", arg, + args->argv[i]) == -1) + goto err; + + ret = parse_opt(opt, tofree, data, f, &outargs); + if (ret == IFUSE_OPT_KEEP) + fuse_opt_add_arg(&outargs, tofree); + free(tofree); + } + if (ret == -1) goto err; } @@ -333,6 +387,8 @@ err: args->allocated = outargs.allocated; args->argc = outargs.argc; args->argv = outargs.argv; + if (ret != 0) + ret = -1; return (ret); } |