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linux-0.11-lab/0/linux/System.map

@@ -145,443 +145,444 @@
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 000098d5 T sys_pipe2
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+000182ad t end
+000182bb t jmp_table
+000182cc t modem_status
+000182d4 t line_status
+000182dc t read_char
+00018363 t get_fs_byte
+00018371 t get_fs_long
+00018387 t put_fs_byte
+0001839f t put_fs_long
+000183ab t change_speed
+00018429 t flush
+0001843b t send_break
+0001843c t get_termios
+00018498 t set_termios
+000184e8 t get_termio
+000185b0 t set_termio
+00018674 T tty_ioctl
+00018972 t get_fs_byte
+00018980 T math_emulate
+00018a63 T math_error
+00018a83 T _exit
+00018a93 T open
+00018adc T close
+00018b50 T dup
+00018b87 T setsid
+00018bb6 T execve
+00018c53 T strcpy
+00018c6f T strncpy
+00018c94 T strcat
+00018cbf T strncat
+00018cf4 T strcmp
+00018d1b T strncmp
+00018d49 T strchr
+00018d76 T strrchr
+00018da5 T strspn
+00018de2 T strcspn
+00018e1f T strpbrk
+00018e56 T strstr
+00018e8f T strlen
+00018eb2 T strtok
+00018f35 T memcpy
+00018f55 T memmove
+00018fa9 T memcmp
+00018fd3 T memchr
+0001900b T memset
+0001d008 d envp_rc
+0001d01c d envp
+0001d040 D sys_call_table
+0001d1bc D NR_syscalls
+0001d1c0 d init_task
+0001e1c0 D current
+0001e1e0 D task
+0001e2e0 D stack_start
+0001e2e8 D current_DOR
+0001e300 d thisname.2124
+0001e340 d month
+0001e380 d last_inode.1935
+0001e384 D start_buffer
+0001e3a0 d crw_table
+0001e3c0 d ioctl_table
+0001e3e0 d floppy_type
+0001e4a0 d cur_spec1
+0001e4a4 d cur_rate
+0001e4a8 d floppy
+0001e4ac d current_track
+0001e4b0 d callable.1844
+0001e4c0 D tty_table
+000209e0 D table_list
+00020a00 d quotient
+00020a20 D _ctype
+00020b21 B __bss_start
+00020b21 D _edata
+00020b40 b printbuf
+00020f40 b memory_end
+00020f44 b buffer_memory_end
+00020f48 b main_memory_start
+00020f60 B jiffies
+00020f64 B startup_time
+00020f68 B last_task_used_math
+00020f7c b mon_timer
+00020f8c b moff_timer
+00020fa0 b timer_list
+000212a0 b next_timer
+000212a4 B last_pid
+000212c0 b buf
+000216c0 b HIGH_MEMORY
+000216e0 b mem_map
+000225e0 B inode_table
+00022ce0 B nr_buffers
+00022ce4 b free_list
+00022ce8 b buffer_wait
+00022cec B ROOT_DEV
+00022d20 B blk_dev
+00022d58 B do_floppy
+00022d5c B selected
+00022d64 b recalibrate
+00022d68 b reset
+00022d6c b seek
+00022d70 b reply_buffer
+00022d77 b current_drive
+00022d78 b sector
+00022d79 b head
+00022d7a b track
+00022d7b b seek_track
+00022d7c b command
+00022d80 B do_hd
+00022da0 B hd_info
+00022dd0 b recalibrate
+00022dd4 b reset
+00022dd8 b NR_HD
+00022de0 b hd
+00022e30 B rd_length
+00022e34 b cr_flag.1923
+00022e40 B beepcount
+00022e44 b video_type
+00022e48 b video_num_columns
+00022e4c b video_size_row
+00022e50 b video_num_lines
+00022e54 b video_page
+00022e58 b video_mem_start
+00022e5c b video_mem_end
+00022e60 b video_port_reg
+00022e62 b video_port_val
+00022e64 b video_erase_char
+00022e68 b origin
+00022e6c b scr_end
+00022e70 b pos
+00022e74 b x
+00022e78 b y
+00022e7c b top
+00022e80 b bottom
+00022e84 b state
+00022e88 b npar
+00022ea0 b par
+00022ee0 b ques
+00022ee4 b saved_x
+00022ee8 b saved_y
+00022f00 B drive_info
+00022f20 B user_stack
+00023f20 B hash_table
+00024400 B super_block
+00024760 B file_table
+00024b60 B request
+00024fe0 B rd_start
+00024fe4 B _ctmp
+00024fe8 B errno
+00024fec B ___strtok
+00024ff0 B end
+00024ff0 B _end

linux-0.11-lab/0/linux/fs/namei.c

@@ -781,3 +781,113 @@ int sys_link(const char * oldname, const char * newname)
 	iput(oldinode);
 	return 0;
 }
+
+// char* sys_getcwd(char * buf, size_t size){
+// 	char *dir [20];
+// 	char * rd;
+// 	struct  buffer_head *bh;
+// 	struct  dir_entry *dr;
+// 	struct m_inode *node;
+// 	int i=0;
+// 	int j,k1,k2;
+// 	int the_last_node;
+// 	char word;
+// 	bh=bread(current->root->i_dev,current->pwd->i_zone[0]);
+// 	dr=(struct dir_entry *)(bh->b_data);
+// 	node=current->pwd;
+// 	while(i>=0){
+// 		the_last_node=dr->inode;
+// 		node=iget(current->root->i_dev,(dr+1)->inode);
+// 		bh=bread(current->root->i_dev,node->i_zone[0]);
+// 		dr=(struct dir_entry *)(bh->b_data);
+// 		j=2;
+// 		while(dr->name[0]!='\0'){
+// 			if((dr+j)->inode==the_last_node) break;
+// 			j++;
+// 		}
+// 		if((dr+j)->name[0]=='\0') break;
+// 		dir[i]=(dr+j)->name;
+// 		i++;
+// 	}
+// 	dir[i]=NULL;
+// 	i--;
+// 	j=0;
+// 	rd[0]='/';
+// 	k1=1;
+// 	while (i>=0)
+// 	{
+// 		k2=0;
+// 		while(dir[i][k2]!='\0'){
+// 			rd[k1]=dir[i][k2];
+// 			k1++;
+// 			k2++;
+// 		}
+// 		if(i==0) break;
+// 		rd[k1]='/';
+// 		k1++;
+// 		i--;
+// 	}
+// 	i=0;
+// 	while(i<=k1)
+// 	{
+// 		word=rd[i];
+// 		put_fs_byte(word,(char*)(buf+i));
+// 		i++;
+// 	}
+// 	return rd;
+// }
+char *sys_getcwd(char *buf, size_t size)
+{
+	char *dir[20];
+	char *rd;
+	struct buffer_head *bh = bread(current->root->i_dev, current->pwd->i_zone[0]);
+	struct dir_entry *dr = (struct dir_entry *)(bh->b_data);
+	struct m_inode *node = current->pwd;
+	int i = 0;
+
+	while (i >= 0)
+	{
+		int last_node=dr->inode;
+		node = iget(current->root->i_dev, (dr + 1)->inode);
+		bh = bread(current->root->i_dev, node->i_zone[0]);
+		dr = (struct dir_entry *)(bh->b_data);
+		int j = 2;
+		while (dr->name[0] != '\0')
+		{
+			if ((dr + j)->inode == last_node)
+				break;
+			j++;
+		}
+		if ((dr + j)->name[0] == '\0')
+			break;
+		dir[i] = (dr + j)->name;
+		i++;
+	}
+	dir[i--] = NULL;
+	rd[0] = '/';
+	
+	int k1 = 1;
+	int k2;
+	for (; i >= 0; i--)
+	{
+		k2 = 0;
+		while (dir[i][k2] != '\0')
+		{
+			rd[k1] = dir[i][k2];
+			k1++;
+			k2++;
+		}
+		if (i == 0)
+			break;
+		rd[k1] = '/';
+		k1++;
+	}
+
+	char word;
+	for (i = 0; i <= k1; i++)
+	{
+		word = rd[i];
+		put_fs_byte(word, (char *)(buf + i));
+	}
+	return rd;
+}

linux-0.11-lab/0/linux/kernel/sys.c

@@ -424,10 +424,7 @@ unsigned int sys_sleep(unsigned int second)
 }
 
 
-int sys_getcwd(char * buf, size_t size)
-{
-	return -ENOSYS;
-}
+
 int sys_mmap(void *start, size_t len, int prot, int flags, 
     int fd, off_t off)
 {

linux-0.11-lab/bochsout.txt

@@ -31,7 +31,7 @@
 00000000000i[      ]   Sound support: no
 00000000000i[      ]   USB support: no
 00000000000i[      ]   VGA extension support: vbe
-00000000000i[MEM0  ] allocated memory at 0xb5911008. after alignment, vector=0xb5912000
+00000000000i[MEM0  ] allocated memory at 0xb589a008. after alignment, vector=0xb589b000
 00000000000i[MEM0  ] 16.00MB
 00000000000i[MEM0  ] mem block size = 0x00020000, blocks=128
 00000000000i[MEM0  ] rom at 0xfffe0000/131072 ('/usr/local/share/bochs/BIOS-bochs-latest')
@@ -42,7 +42,7 @@
 00000000000i[DEV   ] PIIX3 PCI-to-ISA bridge present at device 1, function 0
 00000000000i[PLUGIN] init_dev of 'cmos' plugin device by virtual method
 00000000000i[CMOS  ] Using local time for initial clock
-00000000000i[CMOS  ] Setting initial clock to: Thu Jul  8 12:34:42 2021 (time0=1625744082)
+00000000000i[CMOS  ] Setting initial clock to: Thu Jul  8 15:21:54 2021 (time0=1625754114)
 00000000000i[PLUGIN] init_dev of 'dma' plugin device by virtual method
 00000000000i[DMA   ] channel 4 used by cascade
 00000000000i[PLUGIN] init_dev of 'pic' plugin device by virtual method
@@ -60,7 +60,7 @@
 00000000000i[FLOPPY] fd0: 'cur/linux/Image' ro=0, h=2,t=80,spt=18
 00000000000i[IMG   ] redolog : Standard Header : magic='Bochs Virtual HD Image', type='Redolog', subtype='Volatile', version = 2.0
 00000000000i[IMG   ] redolog : Specific Header : #entries=512, bitmap size=1, exent size = 4096 disk size = 1474560
-00000000000i[IMG   ] 'vvfat' disk opened: directory is 'b/', redolog is 'b//vvfat.dir.ul6Vj4'
+00000000000i[IMG   ] 'vvfat' disk opened: directory is 'b/', redolog is 'b//vvfat.dir.hqCtLg'
 00000000000i[FLOPPY] fd1: 'vvfat:b/' ro=0, h=2,t=80,spt=18
 00000000000i[FLOPPY] Using boot sequence floppy, none, none
 00000000000i[FLOPPY] Floppy boot signature check is enabled
@@ -185,12 +185,11 @@
 00001647811i[BXVGA ] VBE known Display Interface b0c0
 00001647843i[BXVGA ] VBE known Display Interface b0c5
 00001650768i[VBIOS ] VBE Bios $Id: vbe.c,v 1.64 2011/07/19 18:25:05 vruppert Exp $
+00001760340i[XGUI  ] charmap update. Font is 9 x 16
 00001995095i[BIOS  ] ata0-0: PCHS=512/2/20 translation=none LCHS=512/2/20
-00002450910i[XGUI  ] charmap update. Font is 9 x 16
 00005872002i[BIOS  ] IDE time out
 00051753881i[BIOS  ] Booting from 0000:7c00
-00095955866i[FLOPPY] partial read() on floppy image returns 4/512
-00096122531i[FLOPPY] read() on floppy image returns 0
+00096122531i[FLOPPY] partial read() on floppy image returns 196/512
 00096289196i[FLOPPY] read() on floppy image returns 0
 00096455861i[FLOPPY] read() on floppy image returns 0
 00096623572i[FLOPPY] read() on floppy image returns 0
@@ -313,3 +312,26 @@
 00116129682i[FLOPPY] read() on floppy image returns 0
 00116296347i[FLOPPY] read() on floppy image returns 0
 00116467321i[BIOS  ] int13_harddisk: function 15, unmapped device for ELDL=81
+00315090000p[XGUI  ] >>PANIC<< POWER button turned off.
+00315090000i[CPU0  ] CPU is in protected mode (active)
+00315090000i[CPU0  ] CS.mode = 32 bit
+00315090000i[CPU0  ] SS.mode = 32 bit
+00315090000i[CPU0  ] EFER   = 0x00000000
+00315090000i[CPU0  ] | EAX=00000000  EBX=00090080  ECX=0001d1c0  EDX=00000020
+00315090000i[CPU0  ] | ESP=0001e16c  EBP=00023f0c  ESI=000900a0  EDI=00022f20
+00315090000i[CPU0  ] | IOPL=0 id vip vif ac vm rf nt of df IF tf sf zf af PF cf
+00315090000i[CPU0  ] | SEG sltr(index|ti|rpl)     base    limit G D
+00315090000i[CPU0  ] |  CS:0008( 0001| 0|  0) 00000000 00ffffff 1 1
+00315090000i[CPU0  ] |  DS:0010( 0002| 0|  0) 00000000 00ffffff 1 1
+00315090000i[CPU0  ] |  SS:0010( 0002| 0|  0) 00000000 00ffffff 1 1
+00315090000i[CPU0  ] |  ES:0010( 0002| 0|  0) 00000000 00ffffff 1 1
+00315090000i[CPU0  ] |  FS:0017( 0002| 1|  3) 00000000 0009ffff 1 1
+00315090000i[CPU0  ] |  GS:0017( 0002| 1|  3) 00000000 0009ffff 1 1
+00315090000i[CPU0  ] | EIP=00006d3d (00006d3d)
+00315090000i[CPU0  ] | CR0=0x8000001b CR2=0x08038000
+00315090000i[CPU0  ] | CR3=0x00000000 CR4=0x00000000
+00315090000i[CPU0  ] 0x00006d3d>> mov eax, dword ptr ss:[esp+16] : 8B442410
+00315090000i[CMOS  ] Last time is 1625754135 (Thu Jul  8 15:22:15 2021)
+00315090000i[XGUI  ] Exit
+00315090000i[      ] restoring default signal behavior
+00315090000i[SIM   ] quit_sim called with exit code 1

linux-0.11-lab/cur/linux/System.map

@@ -145,443 +145,444 @@
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 000098d5 T sys_pipe2
 00009ad7 T sys_sleep
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-00009b1c T sys_munmap
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-0000a38e T sys_ssetmask
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-0000a973 T free_page
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+00024ff0 B end
+00024ff0 B _end

linux-0.11-lab/cur/linux/fs/namei.c

@@ -781,3 +781,113 @@ int sys_link(const char * oldname, const char * newname)
 	iput(oldinode);
 	return 0;
 }
+
+// char* sys_getcwd(char * buf, size_t size){
+// 	char *dir [20];
+// 	char * rd;
+// 	struct  buffer_head *bh;
+// 	struct  dir_entry *dr;
+// 	struct m_inode *node;
+// 	int i=0;
+// 	int j,k1,k2;
+// 	int the_last_node;
+// 	char word;
+// 	bh=bread(current->root->i_dev,current->pwd->i_zone[0]);
+// 	dr=(struct dir_entry *)(bh->b_data);
+// 	node=current->pwd;
+// 	while(i>=0){
+// 		the_last_node=dr->inode;
+// 		node=iget(current->root->i_dev,(dr+1)->inode);
+// 		bh=bread(current->root->i_dev,node->i_zone[0]);
+// 		dr=(struct dir_entry *)(bh->b_data);
+// 		j=2;
+// 		while(dr->name[0]!='\0'){
+// 			if((dr+j)->inode==the_last_node) break;
+// 			j++;
+// 		}
+// 		if((dr+j)->name[0]=='\0') break;
+// 		dir[i]=(dr+j)->name;
+// 		i++;
+// 	}
+// 	dir[i]=NULL;
+// 	i--;
+// 	j=0;
+// 	rd[0]='/';
+// 	k1=1;
+// 	while (i>=0)
+// 	{
+// 		k2=0;
+// 		while(dir[i][k2]!='\0'){
+// 			rd[k1]=dir[i][k2];
+// 			k1++;
+// 			k2++;
+// 		}
+// 		if(i==0) break;
+// 		rd[k1]='/';
+// 		k1++;
+// 		i--;
+// 	}
+// 	i=0;
+// 	while(i<=k1)
+// 	{
+// 		word=rd[i];
+// 		put_fs_byte(word,(char*)(buf+i));
+// 		i++;
+// 	}
+// 	return rd;
+// }
+char *sys_getcwd(char *buf, size_t size)
+{
+	char *dir[20];
+	char *rd;
+	struct buffer_head *bh = bread(current->root->i_dev, current->pwd->i_zone[0]);
+	struct dir_entry *dr = (struct dir_entry *)(bh->b_data);
+	struct m_inode *node = current->pwd;
+	int i = 0;
+
+	while (i >= 0)
+	{
+		int last_node=dr->inode;
+		node = iget(current->root->i_dev, (dr + 1)->inode);
+		bh = bread(current->root->i_dev, node->i_zone[0]);
+		dr = (struct dir_entry *)(bh->b_data);
+		int j = 2;
+		while (dr->name[0] != '\0')
+		{
+			if ((dr + j)->inode == last_node)
+				break;
+			j++;
+		}
+		if ((dr + j)->name[0] == '\0')
+			break;
+		dir[i] = (dr + j)->name;
+		i++;
+	}
+	dir[i--] = NULL;
+	rd[0] = '/';
+	
+	int k1 = 1;
+	int k2;
+	for (; i >= 0; i--)
+	{
+		k2 = 0;
+		while (dir[i][k2] != '\0')
+		{
+			rd[k1] = dir[i][k2];
+			k1++;
+			k2++;
+		}
+		if (i == 0)
+			break;
+		rd[k1] = '/';
+		k1++;
+	}
+
+	char word;
+	for (i = 0; i <= k1; i++)
+	{
+		word = rd[i];
+		put_fs_byte(word, (char *)(buf + i));
+	}
+	return rd;
+}

linux-0.11-lab/cur/linux/kernel/sys.c

@@ -424,10 +424,7 @@ unsigned int sys_sleep(unsigned int second)
 }
 
 
-int sys_getcwd(char * buf, size_t size)
-{
-	return -ENOSYS;
-}
+
 int sys_mmap(void *start, size_t len, int prot, int flags, 
     int fd, off_t off)
 {