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Userspace: implement basic stat 

I tried to format the output pretty much how linux does, except for
uid and git -> name resolution which is not implemented
This commit is contained in:
Bananymous 2023-08-10 11:15:17 +03:00
parent 165a379c73
commit 313b00b11f
3 changed files with 92 additions and 0 deletions
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1
userspace/CMakeLists.txt
View File

@ -9,6 +9,7 @@ set(USERSPACE_PROJECTS
init init
ls ls
Shell Shell
stat
tee tee
test test
touch touch

16
userspace/stat/CMakeLists.txt Normal file
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@ -0,0 +1,16 @@
cmake_minimum_required(VERSION 3.26)
project(stat CXX)
set(SOURCES
main.cpp
)
add_executable(stat ${SOURCES})
target_compile_options(stat PUBLIC -O2 -g)
target_link_libraries(stat PUBLIC libc ban)
add_custom_target(stat-install
COMMAND cp ${CMAKE_CURRENT_BINARY_DIR}/stat ${BANAN_BIN}/
DEPENDS stat
)

75
userspace/stat/main.cpp Normal file
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@ -0,0 +1,75 @@
#include <stdio.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <BAN/Time.h>
void print_timestamp(timespec ts)
{
auto time = BAN::from_unix_time(ts.tv_sec);
printf("%04d-%02d-%02d %02d:%02d:%02d.%09d",
time.year, time.month, time.day,
time.hour, time.minute, time.second,
ts.tv_nsec
);
}
int main(int argc, char** argv)
{
for (int i = 1; i < argc; i++)
{
struct stat st;
if (stat(argv[i], &st) == -1)
{
perror("stat");
continue;
}
char access[11];
const char* type = nullptr;
if (S_ISBLK(st.st_mode)) {
access[0] = 'b';
type = "block special file";
} else if (S_ISCHR(st.st_mode)) {
access[0] = 'c';
type = "character special file";
} else if (S_ISDIR(st.st_mode)) {
access[0] = 'd';
type = "directory";
} else if (S_ISFIFO(st.st_mode)) {
access[0] = 'f';
type = "fifo";
} else if (S_ISREG(st.st_mode)) {
access[0] = '-';
type = "regular file";
} else if (S_ISLNK(st.st_mode)) {
access[0] = 'l';
type = "symbolic link";
} else if (S_ISSOCK(st.st_mode)) {
access[0] = 's';
type = "socket";
} else {
access[0] = '-';
type = "unknown";
}
access[1] = (st.st_mode & S_IRUSR) ? 'r' : '-';
access[2] = (st.st_mode & S_IWUSR) ? 'w' : '-';
access[3] = (st.st_mode & S_IXUSR) ? 'x' : '-';
access[4] = (st.st_mode & S_IRGRP) ? 'r' : '-';
access[5] = (st.st_mode & S_IWGRP) ? 'w' : '-';
access[6] = (st.st_mode & S_IXGRP) ? 'x' : '-';
access[7] = (st.st_mode & S_IROTH) ? 'r' : '-';
access[8] = (st.st_mode & S_IWOTH) ? 'w' : '-';
access[9] = (st.st_mode & S_IXOTH) ? 'x' : '-';
access[10] = '\0';
printf(" File: %s\n", argv[i]);
printf(" Size: %-15d Blocks: %-10d IO Block: %-6d %s\n", (int)st.st_size, (int)st.st_blocks, (int)st.st_blksize, type);
printf("Device: %d,%-5d Inode: %-11d Links: %-5d Device type: %d,%d\n", (int)major(st.st_dev), (int)minor(st.st_dev), (int)st.st_ino, (int)st.st_nlink, (int)major(st.st_rdev), (int)minor(st.st_rdev));
printf("Access: (%04o/%s) Uid: %5d Gid: %5d\n", (int)(st.st_mode & S_IRWXMASK), access, (int)st.st_uid, (int)st.st_gid);
printf("Access: "); print_timestamp(st.st_atim); printf("\n");
printf("Modify: "); print_timestamp(st.st_mtim); printf("\n");
printf("Change: "); print_timestamp(st.st_ctim); printf("\n");
}
}