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More argument checks

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This commit is contained in:
bzt 2021-10-15 12:38:28 +02:00
parent 46c849ac4c
commit d558276ea4
1 changed files with 30 additions and 2 deletions
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32
uefi/stdio.c
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@ -113,6 +113,10 @@ int fclose (FILE *__stream)
{
efi_status_t status = EFI_SUCCESS;
uintn_t i;
if(!__stream) {
errno = EINVAL;
return 0;
}
if(__stream == stdin || __stream == stdout || __stream == stderr || (__ser && __stream == (FILE*)__ser)) {
return 1;
}
@ -128,6 +132,10 @@ int fflush (FILE *__stream)
{
efi_status_t status = EFI_SUCCESS;
uintn_t i;
if(!__stream) {
errno = EINVAL;
return 0;
}
if(__stream == stdin || __stream == stdout || __stream == stderr || (__ser && __stream == (FILE*)__ser)) {
return 1;
}
@ -146,7 +154,7 @@ int __remove (const char_t *__filename, int isdir)
efi_file_info_t info;
uintn_t fsiz = (uintn_t)sizeof(efi_file_info_t), i;
FILE *f = fopen(__filename, CL("r"));
if(f == stdin || f == stdout || f == stderr || (__ser && f == (FILE*)__ser)) {
if(!f || f == stdin || f == stdout || f == stderr || (__ser && f == (FILE*)__ser)) {
errno = EBADF;
return 1;
}
@ -288,6 +296,10 @@ size_t fread (void *__ptr, size_t __size, size_t __n, FILE *__stream)
{
uintn_t bs = __size * __n, i, n;
efi_status_t status;
if(!__ptr || __size < 1 || __n < 1 || !__stream) {
errno = EINVAL;
return 0;
}
if(__stream == stdin || __stream == stdout || __stream == stderr) {
errno = ESPIPE;
return 0;
@ -320,6 +332,10 @@ size_t fwrite (const void *__ptr, size_t __size, size_t __n, FILE *__stream)
{
uintn_t bs = __size * __n, n, i;
efi_status_t status;
if(!__ptr || __size < 1 || __n < 1 || !__stream) {
errno = EINVAL;
return 0;
}
if(__stream == stdin || __stream == stdout || __stream == stderr) {
errno = ESPIPE;
return 0;
@ -355,6 +371,10 @@ int fseek (FILE *__stream, long int __off, int __whence)
efi_guid_t infoGuid = EFI_FILE_INFO_GUID;
efi_file_info_t info;
uintn_t fsiz = sizeof(efi_file_info_t), i;
if(!__stream || (__whence != SEEK_SET && __whence != SEEK_CUR && __whence != SEEK_END)) {
errno = EINVAL;
return -1;
}
if(__stream == stdin || __stream == stdout || __stream == stderr) {
errno = ESPIPE;
return -1;
@ -410,6 +430,10 @@ long int ftell (FILE *__stream)
uint64_t off = 0;
uintn_t i;
efi_status_t status;
if(!__stream) {
errno = EINVAL;
return -1;
}
if(__stream == stdin || __stream == stdout || __stream == stderr) {
errno = ESPIPE;
return -1;
@ -433,6 +457,10 @@ int feof (FILE *__stream)
efi_file_info_t info;
uintn_t fsiz = (uintn_t)sizeof(efi_file_info_t), i;
efi_status_t status;
if(!__stream) {
errno = EINVAL;
return 0;
}
if(__stream == stdin || __stream == stdout || __stream == stderr) {
errno = ESPIPE;
return 0;
@ -702,7 +730,7 @@ int vfprintf (FILE *__stream, const char_t *__format, __builtin_va_list args)
#else
ret = vsnprintf(dst, BUFSIZ, __format, args);
#endif
if(ret < 1 || __stream == stdin) return 0;
if(ret < 1 || !__stream || __stream == stdin) return 0;
for(i = 0; i < __blk_ndevs; i++)
if(__stream == (FILE*)__blk_devs[i].bio) {
errno = EBADF;