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AK: Use size_t for the length of strings

Browse source 
Using int was a mistake. This patch changes String, StringImpl,
StringView and StringBuilder to use size_t instead of int for lengths.
Obviously a lot of code needs to change as a result of this.
This commit is contained in:
Andreas Kling 2019-12-09 17:45:40 +01:00
parent 1726c17d0d
commit 6f4c380d95
54 changed files with 387 additions and 377 deletions
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2
Kernel/FileSystem/FileSystem.cpp
View file

@ -46,7 +46,7 @@ FS::DirectoryEntry::DirectoryEntry(const char* n, InodeIdentifier i, u8 ft)
name[name_length] = '\0';
}
FS::DirectoryEntry::DirectoryEntry(const char* n, int nl, InodeIdentifier i, u8 ft)
FS::DirectoryEntry::DirectoryEntry(const char* n, size_t nl, InodeIdentifier i, u8 ft)
: name_length(nl)
, inode(i)
, file_type(ft)

4
Kernel/FileSystem/FileSystem.h
View file

@ -50,9 +50,9 @@ public:
// FIXME: This data structure is very clunky and unpleasant. Replace it with something nicer.
struct DirectoryEntry {
DirectoryEntry(const char* name, InodeIdentifier, u8 file_type);
DirectoryEntry(const char* name, int name_length, InodeIdentifier, u8 file_type);
DirectoryEntry(const char* name, size_t name_length, InodeIdentifier, u8 file_type);
char name[256];
int name_length { 0 };
size_t name_length { 0 };
InodeIdentifier inode;
u8 file_type { 0 };
};

8
Kernel/FileSystem/ProcFS.cpp
View file

@ -1085,11 +1085,11 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
if (!entry.name)
continue;
if (entry.proc_file_type > __FI_Root_Start && entry.proc_file_type < __FI_Root_End)
callback({ entry.name, (int)strlen(entry.name), to_identifier(fsid(), PDI_Root, 0, (ProcFileType)entry.proc_file_type), 0 });
callback({ entry.name, strlen(entry.name), to_identifier(fsid(), PDI_Root, 0, (ProcFileType)entry.proc_file_type), 0 });
}
for (auto pid_child : Process::all_pids()) {
char name[16];
int name_length = sprintf(name, "%u", pid_child);
size_t name_length = (size_t)sprintf(name, "%u", pid_child);
callback({ name, name_length, to_identifier(fsid(), PDI_Root, pid_child, FI_PID), 0 });
}
break;
@ -1119,7 +1119,7 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
if (entry.proc_file_type == FI_PID_exe && !process.executable())
continue;
// FIXME: strlen() here is sad.
callback({ entry.name, (int)strlen(entry.name), to_identifier(fsid(), PDI_PID, pid, (ProcFileType)entry.proc_file_type), 0 });
callback({ entry.name, strlen(entry.name), to_identifier(fsid(), PDI_PID, pid, (ProcFileType)entry.proc_file_type), 0 });
}
}
} break;
@ -1134,7 +1134,7 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
if (!description)
continue;
char name[16];
int name_length = sprintf(name, "%u", i);
size_t name_length = (size_t)sprintf(name, "%u", i);
callback({ name, name_length, to_identifier_with_fd(fsid(), pid, i), 0 });
}
} break;

2
Kernel/Net/LocalSocket.cpp
View file

@ -274,7 +274,7 @@ ssize_t LocalSocket::recvfrom(FileDescription& description, void* buffer, size_t
StringView LocalSocket::socket_path() const
{
int len = strnlen(m_address.sun_path, sizeof(m_address.sun_path));
size_t len = strnlen(m_address.sun_path, sizeof(m_address.sun_path));
return { m_address.sun_path, len };
}

26
Kernel/Process.cpp
View file

@ -319,7 +319,7 @@ int Process::sys$gethostname(char* buffer, ssize_t size)
if (!validate_write(buffer, size))
return -EFAULT;
LOCKER(*s_hostname_lock);
if (size < (s_hostname->length() + 1))
if ((size_t)size < (s_hostname->length() + 1))
return -ENAMETOOLONG;
strcpy(buffer, s_hostname->characters());
return 0;
@ -1038,7 +1038,7 @@ int Process::sys$ttyname_r(int fd, char* buffer, ssize_t size)
if (!description->is_tty())
return -ENOTTY;
auto tty_name = description->tty()->tty_name();
if (size < tty_name.length() + 1)
if ((size_t)size < tty_name.length() + 1)
return -ERANGE;
memcpy(buffer, tty_name.characters_without_null_termination(), tty_name.length());
buffer[tty_name.length()] = '\0';
@ -1058,7 +1058,7 @@ int Process::sys$ptsname_r(int fd, char* buffer, ssize_t size)
if (!master_pty)
return -ENOTTY;
auto pts_name = master_pty->pts_name();
if (size < pts_name.length() + 1)
if ((size_t)size < pts_name.length() + 1)
return -ERANGE;
strcpy(buffer, pts_name.characters());
return 0;
@ -1347,7 +1347,7 @@ int Process::sys$getcwd(char* buffer, ssize_t size)
if (!validate_write(buffer, size))
return -EFAULT;
auto path = current_directory().absolute_path();
if (size < path.length() + 1)
if ((size_t)size < path.length() + 1)
return -ERANGE;
strcpy(buffer, path.characters());
return 0;
@ -2991,11 +2991,14 @@ int Process::sys$join_thread(int tid, void** exit_value)
int Process::sys$set_thread_name(int tid, const char* buffer, int buffer_size)
{
if (buffer_size < 0)
return -EINVAL;
if (!validate_read(buffer, buffer_size))
return -EFAULT;
const size_t max_thread_name_size = 64;
if (strnlen(buffer, buffer_size) > max_thread_name_size)
if (strnlen(buffer, (size_t)buffer_size) > max_thread_name_size)
return -EINVAL;
Thread* thread = nullptr;
@ -3015,7 +3018,7 @@ int Process::sys$set_thread_name(int tid, const char* buffer, int buffer_size)
if (thread == &current->process().main_thread())
return -EINVAL;
thread->set_name({buffer, buffer_size});
thread->set_name({ buffer, (size_t)buffer_size });
return 0;
}
@ -3039,7 +3042,7 @@ int Process::sys$get_thread_name(int tid, char* buffer, int buffer_size)
if (!thread)
return -ESRCH;
if (thread->name().length() >= buffer_size)
if (thread->name().length() >= (size_t)buffer_size)
return -ENAMETOOLONG;
strncpy(buffer, thread->name().characters(), buffer_size);
@ -3112,10 +3115,13 @@ int Process::sys$ftruncate(int fd, off_t length)
int Process::sys$watch_file(const char* path, int path_length)
{
if (path_length < 0)
return -EINVAL;
if (!validate_read(path, path_length))
return -EFAULT;
auto custody_or_error = VFS::the().resolve_path({ path, path_length }, current_directory());
auto custody_or_error = VFS::the().resolve_path({ path, (size_t)path_length }, current_directory());
if (custody_or_error.is_error())
return custody_or_error.error();
@ -3335,10 +3341,10 @@ int Process::sys$get_process_name(char* buffer, int buffer_size)
if (!validate_write(buffer, buffer_size))
return -EFAULT;
if (m_name.length() >= buffer_size)
if (m_name.length() >= (size_t)buffer_size)
return -ENAMETOOLONG;
strncpy(buffer, m_name.characters(), buffer_size);
strncpy(buffer, m_name.characters(), (size_t)buffer_size);
return 0;
}