List of flags for syscall and C std functions

flags.txt

--protection
PROT_NONE:  0b000
PROT_READ:  0b001
PROT_WRITE: 0b010
PROT_EXEC:  0b100

--map flags
MAP_SHARED:    0b000001   Share mapping with all process mapped to this object. Chages made will be written to file
MAP_PRIVATE:   0b000010   Mapping not shared with other processes. Changes made will not be written to file
MAP_FIXED:     0b010000   System is forced to use exact mapping address specified. Fail if not possible
MAP_ANONYMOUS: 0b100000   Not connected to any files
MAP_ANON:      0b100000   |>

--file flags
O_RDONLY:         00                    0b000  Only read the file
O_WRONLY:         01                    0b001  Only write the file
O_RDWR:           02                    0b010  Read and write the file
O_CREAT:        0100              0b001000000  Create file if it does not exist
O_APPEND:      02000           0b010000000000  Append to file
O_ASYNC:      020000        0b010000000000000
O_CLOEXEC:  02000000  0b010000000000000000000
O_DIRECTORY: 0040000        0b100000000000000
O_DSYNC:      010000        0b001000000000000
O_EXCL:         0200              0b010000000
O_NOCTTY:       0400              0b100000000
O_NOFOLLOW:  0100000     0b001000000000000000
O_NONBLOCK:    04000           0b100000000000
O_NDELAY:      04000           0b100000000000
O_TRUNC:       01000           0b001000000000 Truncate content of file if exists and write permission

--file permisssions
S_IRWXU    00700    0b111000000 user (file owner) has read, write, and execute permission
S_IRUSR    00400    0b100000000 user has read permission
S_IWUSR    00200    0b010000000 user has write permission
S_IXUSR    00100    0b001000000 user has execute permission
S_IRWXG    00070    0b000111000 group has read, write, and execute permission
S_IRGRP    00040    0b000100000 group has read permission
S_IWGRP    00020    0b000010000 group has write permission
S_IXGRP    00010    0b000001000 group has execute permission
S_IRWXO    00007    0b000000111 others have read, write, and execute permission
S_IROTH    00004    0b000000100 others have read permission
S_IWOTH    00002    0b000000010 others have write permission
S_IXOTH    00001    0b000000001 others have execute permission
S_ISUID  0004000 0b100000000000 set-user-ID bit
S_ISGID  0002000 0b010000000000 set-group-ID bit (see inode(7)).
S_ISVTX  0001000 0b001000000000 sticky bit (see inode(7)).