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syscalls: read: seek on read

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Matheus
2022-08-27 20:29:25 -03:00
parent 6d4439ee2f
commit 06e91be62e
1 changed files with 7 additions and 4 deletions
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src/sys/syscalls/read.c
+5 -2
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@@ -43,17 +43,20 @@ syscallret syscall_read(int ifd, void* buff, size_t count){
int err; int err;
size_t readc = vfs_read(&err, fd->node, kbuff, count, fd->offset); size_t readc = vfs_read(&err, fd->node, kbuff, count, fd->offset);
spinlock_release(&fd->lock);
if(err){ if(err){
spinlock_release(&fd->lock);
free(kbuff); free(kbuff);
retv.errno = err; retv.errno = err;
return retv; return retv;
} }
memcpy(buff, kbuff, count); // XXX user version for safety fd->offset += readc;
spinlock_release(&fd->lock);
memcpy(buff, kbuff, count); // XXX user version for safety
retv.errno = 0; retv.errno = 0;
retv.ret = readc; retv.ret = readc;