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Add sys$uname() and a /bin/uname utility.

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This commit is contained in:
Andreas Kling 2018-10-26 14:56:21 +02:00
parent 384e2f24d4
commit 1c45b28da6
15 changed files with 129 additions and 10 deletions
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1
Userland/.gitignore vendored
View file

@ -10,3 +10,4 @@ false
true
hostname
cat
uname

9
Userland/Makefile
View file

@ -9,7 +9,8 @@ OBJS = \
true.o \
false.o \
hostname.o \
cat.o
cat.o \
uname.o
APPS = \
id \
@ -22,7 +23,8 @@ APPS = \
true \
false \
hostname \
cat
cat \
uname
ARCH_FLAGS =
STANDARD_FLAGS = -std=c++17 -nostdinc++ -nostdlib
@ -75,6 +77,9 @@ hostname: hostname.o
cat: cat.o
$(LD) -o $@ $(LDFLAGS) $< ../LibC/LibC.a
uname: uname.o
$(LD) -o $@ $(LDFLAGS) $< ../LibC/LibC.a
.cpp.o:
@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<

46
Userland/uname.cpp Normal file
View file

@ -0,0 +1,46 @@
#include <LibC/utsname.h>
#include <LibC/stdio.h>
int main(int argc, char** argv)
{
utsname uts;
int rc = uname(&uts);
if (rc < 0) {
perror("uname() failed");
return 0;
}
bool flag_s = false;
bool flag_n = false;
bool flag_r = false;
bool flag_m = false;
if (argc == 1) {
flag_s = true;
} else {
for (int i = 1; i < argc; ++i) {
if (argv[i][0] == '-') {
for (const char* o = &argv[i][1]; *o; ++o) {
switch (*o) {
case 's': flag_s = true; break;
case 'n': flag_n = true; break;
case 'r': flag_r = true; break;
case 'm': flag_m = true; break;
case 'a': flag_s = flag_n = flag_r = flag_m = true; break;
}
}
}
}
}
if (!flag_s && !flag_n && !flag_r && !flag_m)
flag_s = true;
if (flag_s)
printf("%s ", uts.sysname);
if (flag_n)
printf("%s ", uts.nodename);
if (flag_r)
printf("%s ", uts.release);
if (flag_m)
printf("%s ", uts.machine);
printf("\n");
return 0;
}