diff options
Diffstat (limited to 'syscall.c')
| -rw-r--r-- | syscall.c | 50 |
1 files changed, 25 insertions, 25 deletions
@@ -41,7 +41,7 @@ fetchint(struct proc *p, uint addr, int *ip) // Fetch byte from a user-supplied pointer. // Returns 0 on success, -1 if pointer is illegal. int -fetchbyte(struct proc *p, uint addr, char* c) +fetchbyte(struct proc *p, uint addr, char *c) { if(addr >= p->sz) return -1; @@ -262,10 +262,10 @@ sys_open(void) iunlock(ip); fd->type = FD_FILE; - if (arg1 & O_RDWR) { + if(arg1 & O_RDWR) { fd->readable = 1; fd->writeable = 1; - } else if (arg1 & O_WRONLY) { + } else if(arg1 & O_WRONLY) { fd->readable = 0; fd->writeable = 1; } else { @@ -287,7 +287,7 @@ sys_mknod(void) uint arg0, arg1, arg2, arg3; int l; - if(fetcharg(0, &arg0) < 0 || fetcharg(1, &arg1) < 0 || + if(fetcharg(0, &arg0) < 0 || fetcharg(1, &arg1) < 0 || fetcharg(2, &arg2) < 0 || fetcharg(3, &arg3) < 0) return -1; @@ -297,7 +297,7 @@ sys_mknod(void) if(l >= DIRSIZ) return -1; - nip = mknod (cp->mem + arg0, (short) arg1, (short) arg2, (short) arg3); + nip = mknod(cp->mem + arg0, (short) arg1, (short) arg2, (short) arg3); if(nip) iput(nip); return (nip == 0) ? -1 : 0; @@ -314,7 +314,7 @@ sys_mkdir(void) struct dirent de; char *last; - if(fetcharg(0, &arg0) < 0) + if(fetcharg(0, &arg0) < 0) return -1; if((l = checkstring(arg0)) < 0) @@ -332,15 +332,15 @@ sys_mkdir(void) dp->nlink += 1; iupdate(dp); - - memset (de.name, '\0', DIRSIZ); + + memset(de.name, '\0', DIRSIZ); de.name[0] = '.'; de.inum = nip->inum; - writei (nip, (char *) &de, 0, sizeof(de)); + writei(nip, (char*) &de, 0, sizeof(de)); de.inum = dp->inum; de.name[1] = '.'; - writei (nip, (char *) &de, sizeof(de), sizeof(de)); + writei(nip, (char*) &de, sizeof(de), sizeof(de)); iput(dp); iput(nip); @@ -356,22 +356,22 @@ sys_chdir(void) struct inode *ip; uint arg0; int l; - - if(fetcharg(0, &arg0) < 0) + + if(fetcharg(0, &arg0) < 0) return -1; if((l = checkstring(arg0)) < 0) return -1; - if ((ip = namei(cp->mem + arg0, NAMEI_LOOKUP, 0, 0, 0)) == 0) + if((ip = namei(cp->mem + arg0, NAMEI_LOOKUP, 0, 0, 0)) == 0) return -1; - if (ip == cp->cwd) { - iput (ip); + if(ip == cp->cwd) { + iput(ip); return 0; } - if (ip->type != T_DIR) { + if(ip->type != T_DIR) { iput(ip); return -1; } @@ -388,7 +388,7 @@ sys_unlink(void) struct proc *cp = curproc[cpu()]; uint arg0; int r; - + if(fetcharg(0, &arg0) < 0) return -1; if(checkstring(arg0) < 0) @@ -403,7 +403,7 @@ sys_fstat(void) struct proc *cp = curproc[cpu()]; uint fd, addr; int r; - + if(fetcharg(0, &fd) < 0) return -1; if(fetcharg(1, &addr) < 0) @@ -414,7 +414,7 @@ sys_fstat(void) return -1; if(addr + sizeof(struct stat) > cp->sz) return -1; - r = fd_stat (cp->fds[fd], (struct stat *)(cp->mem + addr)); + r = fd_stat(cp->fds[fd], (struct stat*)(cp->mem + addr)); return r; } @@ -423,14 +423,14 @@ sys_dup(void) { struct proc *cp = curproc[cpu()]; uint fd, ufd1; - + if(fetcharg(0, &fd) < 0) return -1; if(fd < 0 || fd >= NOFILE) return -1; - if(cp->fds[fd] == 0) + if(cp->fds[fd] == 0) return -1; - if ((ufd1 = fd_ualloc()) < 0) + if((ufd1 = fd_ualloc()) < 0) return -1; cp->fds[ufd1] = cp->fds[fd]; fd_incref(cp->fds[ufd1]); @@ -443,7 +443,7 @@ sys_link(void) struct proc *cp = curproc[cpu()]; uint name1, name2; int r; - + if(fetcharg(0, &name1) < 0 || checkstring(name1) < 0) return -1; if(fetcharg(1, &name2) < 0 || checkstring(name2) < 0) @@ -471,7 +471,7 @@ sys_sbrk(void) return -1; if((addr = growproc(n)) == 0xffffffff) return -1; - setupsegs(cp); + setupsegs(cp); return addr; } @@ -513,7 +513,7 @@ sys_exec(void) goto bad; sz += ph.memsz; } - + sz += 4096 - (sz % 4096); sz += 4096; |