diff options
Diffstat (limited to 'libc-top-half/musl/src/stdio/fread.c')
-rw-r--r-- | libc-top-half/musl/src/stdio/fread.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/stdio/fread.c b/libc-top-half/musl/src/stdio/fread.c new file mode 100644 index 0000000..a2116da --- /dev/null +++ b/libc-top-half/musl/src/stdio/fread.c @@ -0,0 +1,38 @@ +#include "stdio_impl.h" +#include <string.h> + +#define MIN(a,b) ((a)<(b) ? (a) : (b)) + +size_t fread(void *restrict destv, size_t size, size_t nmemb, FILE *restrict f) +{ + unsigned char *dest = destv; + size_t len = size*nmemb, l = len, k; + if (!size) nmemb = 0; + + FLOCK(f); + + f->mode |= f->mode-1; + + if (f->rpos != f->rend) { + /* First exhaust the buffer. */ + k = MIN(f->rend - f->rpos, l); + memcpy(dest, f->rpos, k); + f->rpos += k; + dest += k; + l -= k; + } + + /* Read the remainder directly */ + for (; l; l-=k, dest+=k) { + k = __toread(f) ? 0 : f->read(f, dest, l); + if (!k) { + FUNLOCK(f); + return (len-l)/size; + } + } + + FUNLOCK(f); + return nmemb; +} + +weak_alias(fread, fread_unlocked); |