Userspace: add basic 'touch' command

This commit is contained in:
Bananymous 2023-07-10 16:24:03 +03:00
parent 6e1fc2766f
commit 5c94a583bc
3 changed files with 38 additions and 0 deletions

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@ -11,6 +11,7 @@ set(USERSPACE_PROJECTS
Shell
tee
test
touch
u8sum
yes
)

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

21
userspace/touch/main.cpp Normal file
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@ -0,0 +1,21 @@
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
int main(int argc, char** argv)
{
for (int i = 1; i < argc; i++)
{
int fd = open(argv[i], O_WRONLY | O_CREAT, 0644);
if (fd == -1)
{
if (errno != EEXISTS)
perror(argv[i]);
}
else
{
close(fd);
}
}
return 0;
}