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https://github.com/RGBCube/serenity
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Add a simple /bin/df which gathers its info from /proc/df.
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8 changed files with 119 additions and 0 deletions
1
Userland/.gitignore
vendored
1
Userland/.gitignore
vendored
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@ -32,3 +32,4 @@ top
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chmod
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pape
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ln
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df
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@ -27,6 +27,7 @@ OBJS = \
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dmesg.o \
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chmod.o \
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top.o \
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df.o \
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ln.o \
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rm.o
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@ -61,6 +62,7 @@ APPS = \
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chmod \
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top \
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ln \
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df \
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rm
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ARCH_FLAGS =
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@ -174,6 +176,9 @@ top: top.o
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ln: ln.o
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$(LD) -o $@ $(LDFLAGS) $< ../LibC/LibC.a
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df: df.o
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$(LD) -o $@ $(LDFLAGS) $< ../LibC/LibC.a
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.cpp.o:
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@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
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55
Userland/df.cpp
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55
Userland/df.cpp
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@ -0,0 +1,55 @@
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <AK/AKString.h>
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#include <AK/Vector.h>
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struct FileSystem {
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String fs;
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size_t total_block_count { 0 };
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size_t free_block_count { 0 };
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size_t total_inode_count { 0 };
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size_t free_inode_count { 0 };
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String mount_point;
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};
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int main(int, char**)
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{
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FILE* fp = fopen("/proc/df", "r");
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if (!fp) {
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perror("failed to open /proc/df");
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return 1;
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}
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printf("Filesystem Blocks Used Available Mount point\n");
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for (;;) {
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char buf[4096];
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char* ptr = fgets(buf, sizeof(buf), fp);
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if (!ptr)
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break;
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auto parts = String(buf, Chomp).split(',');
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if (parts.size() < 6)
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break;
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bool ok;
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String fs = parts[0];
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unsigned total_block_count = parts[1].to_uint(ok);
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ASSERT(ok);
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unsigned free_block_count = parts[2].to_uint(ok);
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ASSERT(ok);
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unsigned total_inode_count = parts[3].to_uint(ok);
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ASSERT(ok);
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unsigned free_inode_count = parts[4].to_uint(ok);
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ASSERT(ok);
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String mount_point = parts[5];
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printf("% 10s", fs.characters());
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printf("%10u ", total_block_count);
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printf("%10u ", total_block_count - free_block_count);
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printf("%10u ", free_block_count);
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printf("%s", mount_point.characters());
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printf("\n");
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}
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int rc = fclose(fp);
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ASSERT(rc == 0);
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return 0;
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}
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