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Kernel: Make utime() take path+length, remove SmapDisabler

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This commit is contained in:
Andreas Kling 2020-01-06 12:23:30 +01:00
parent 1226fec19e
commit 53bda09d15
Notes: sideshowbarker 2024-07-19 10:18:36 +09:00
3 changed files with 18 additions and 17 deletions
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26
Kernel/Process.cpp
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@ -1432,25 +1432,21 @@ int Process::sys$close(int fd)
return rc;
}
int Process::sys$utime(const char* pathname, const utimbuf* buf)
int Process::sys$utime(const char* user_path, size_t path_length, const utimbuf* user_buf)
{
SmapDisabler disabler;
if (!validate_read_str(pathname))
if (user_buf && !validate_read_typed(user_buf))
return -EFAULT;
if (buf && !validate_read_typed(buf))
return -EFAULT;
time_t atime;
time_t mtime;
if (buf) {
atime = buf->actime;
mtime = buf->modtime;
auto path = get_syscall_path_argument(user_path, path_length);
if (path.is_error())
return path.error();
utimbuf buf;
if (user_buf) {
copy_from_user(&buf, user_buf, sizeof(buf));
} else {
struct timeval now;
kgettimeofday(now);
mtime = now.tv_sec;
atime = now.tv_sec;
auto now = kgettimeofday();
buf = { now.tv_sec, now.tv_sec };
}
return VFS::the().utime(StringView(pathname), current_directory(), atime, mtime);
return VFS::the().utime(path.value(), current_directory(), buf.actime, buf.modtime);
}
int Process::sys$access(const char* user_path, size_t path_length, int mode)

2
Kernel/Process.h
View file

@ -176,7 +176,7 @@ public:
int sys$ioctl(int fd, unsigned request, unsigned arg);
int sys$mkdir(const char* pathname, size_t path_length, mode_t mode);
clock_t sys$times(tms*);
int sys$utime(const char* pathname, const struct utimbuf*);
int sys$utime(const char* pathname, size_t path_length, const struct utimbuf*);
int sys$link(const char* old_path, const char* new_path);
int sys$unlink(const char* pathname);
int sys$symlink(const char* target, const char* linkpath);

7
Libraries/LibC/utime.cpp
View file

@ -1,12 +1,17 @@
#include <Kernel/Syscall.h>
#include <errno.h>
#include <string.h>
#include <utime.h>
extern "C" {
int utime(const char* pathname, const struct utimbuf* buf)
{
int rc = syscall(SC_utime, (u32)pathname, (u32)buf);
if (!pathname) {
errno = EFAULT;
return -1;
}
int rc = syscall(SC_utime, pathname, strlen(pathname), buf);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
}