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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* fstree_cli.c
*
* Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "common.h"
#include "util/util.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
enum {
DEF_UID = 0,
DEF_GID,
DEF_MODE,
DEF_MTIME,
};
static const char *defaults[] = {
[DEF_UID] = "uid",
[DEF_GID] = "gid",
[DEF_MODE] = "mode",
[DEF_MTIME] = "mtime",
NULL
};
int parse_fstree_defaults(fstree_defaults_t *sb, char *subopts)
{
char *value;
long lval;
int i;
memset(sb, 0, sizeof(*sb));
sb->mode = S_IFDIR | 0755;
sb->mtime = get_source_date_epoch();
if (subopts == NULL)
return 0;
while (*subopts != '\0') {
i = getsubopt(&subopts, (char *const *)defaults, &value);
if (value == NULL) {
fprintf(stderr, "Missing value for option %s\n",
defaults[i]);
return -1;
}
switch (i) {
case DEF_UID:
lval = strtol(value, NULL, 0);
if (lval < 0)
goto fail_uv;
if (lval > (long)INT32_MAX)
goto fail_ov;
sb->uid = lval;
break;
case DEF_GID:
lval = strtol(value, NULL, 0);
if (lval < 0)
goto fail_uv;
if (lval > (long)INT32_MAX)
goto fail_ov;
sb->gid = lval;
break;
case DEF_MODE:
lval = strtol(value, NULL, 0);
if (lval < 0)
goto fail_uv;
if (lval > 07777)
goto fail_ov;
sb->mode = S_IFDIR | (sqfs_u16)lval;
break;
case DEF_MTIME:
errno = 0;
lval = strtol(value, NULL, 0);
if (lval < 0)
goto fail_uv;
if (sizeof(long) > sizeof(sqfs_u32)) {
if (lval > (long)UINT32_MAX)
goto fail_ov;
} else if (errno != 0) {
goto fail_ov;
}
sb->mtime = lval;
break;
default:
fprintf(stderr, "Unknown option '%s'\n", value);
return -1;
}
}
return 0;
fail_uv:
fprintf(stderr, "%s: value must be positive\n", defaults[i]);
return -1;
fail_ov:
fprintf(stderr, "%s: value too large\n", defaults[i]);
return -1;
}
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