ladybird/Userland/Libraries/LibC/utime.cpp

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <errno.h>
#include <string.h>
#include <syscall.h>
#include <utime.h>

extern "C" {

int utime(char const* pathname, const struct utimbuf* buf)
{
    if (!pathname) {
        errno = EFAULT;
        return -1;
    }
    int rc = syscall(SC_utime, pathname, strlen(pathname), buf);
    __RETURN_WITH_ERRNO(rc, rc, -1);
}
}
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 11:38:21 +03:00			`/*`
			`* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>`
			`*`
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt * 2021-04-22 11:24:48 +03:00			`* SPDX-License-Identifier: BSD-2-Clause`
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 11:38:21 +03:00			`*/`

LibC: Run clang-format on everything. 2019-06-07 12:49:03 +03:00			`#include <errno.h>`
Kernel: Make utime() take path+length, remove SmapDisabler 2020-01-06 14:23:30 +03:00			`#include <string.h>`
Userland: Add LibSystem and funnel all syscalls through it This achieves two things: - Programs can now intentionally perform arbitrary syscalls by calling syscall(). This allows us to work on things like syscall fuzzing. - It restricts the ability of userspace to make syscalls to a single 4KB page of code. In order to call the kernel directly, an attacker must now locate this page and call through it. 2021-02-05 14:16:30 +03:00			`#include <syscall.h>`
LibC: Run clang-format on everything. 2019-06-07 12:49:03 +03:00			`#include <utime.h>`
Implement utime() along with a naive /bin/touch. This synchronous approach to inodes is silly, obviously. I need to rework it so that the in-memory CoreInode object is the canonical inode, and then we just need a sync() that flushes pending changes to disk. 2018-12-19 23:14:55 +03:00
			`extern "C" {`

Everywhere: Run clang-format 2022-04-01 20:58:27 +03:00			`int utime(char const* pathname, const struct utimbuf* buf)`
Implement utime() along with a naive /bin/touch. This synchronous approach to inodes is silly, obviously. I need to rework it so that the in-memory CoreInode object is the canonical inode, and then we just need a sync() that flushes pending changes to disk. 2018-12-19 23:14:55 +03:00			`{`
Kernel: Make utime() take path+length, remove SmapDisabler 2020-01-06 14:23:30 +03:00			`if (!pathname) {`
			`errno = EFAULT;`
			`return -1;`
			`}`
			`int rc = syscall(SC_utime, pathname, strlen(pathname), buf);`
Implement utime() along with a naive /bin/touch. This synchronous approach to inodes is silly, obviously. I need to rework it so that the in-memory CoreInode object is the canonical inode, and then we just need a sync() that flushes pending changes to disk. 2018-12-19 23:14:55 +03:00			`__RETURN_WITH_ERRNO(rc, rc, -1);`
			`}`
			`}`