fs Fetch file contents

base/scripts/rc.tb

@@ -1,2 +1,3 @@
 mkalias pctl base:/bin/pctl
 mkalias tb base:/bin/tb
+mkalias fs base:/bin/fs

share/sysdefs/ioctl.h

@@ -30,4 +30,6 @@ typedef struct IoctlStat {
   int32_t type;
 } IoctlStat;
 
+typedef int32_t IOH;
+
 #endif // SHARE_SYSDEFS_IOCTL_H_

ulib/string/conv.c

@@ -157,3 +157,34 @@ long string_conv_strtol(const char *nptr, char **endptr, int base)
 		*endptr = (char *) (any ? s - 1 : nptr);
 	return (acc);
 }
+
+const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
+  static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
+  int unit = 0;
+
+  // Scale down until value fits nicely
+  uint64_t rem = 0;
+  while (bytes >= 1024 && unit < (int)(sizeof(units)/sizeof(units[0])) - 1) {
+    rem = bytes % 1024;
+    bytes /= 1024;
+    unit++;
+  }
+
+  if (unit == 0) {
+    // Just bytes
+    usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
+  } else {
+    // Show one decimal place without using floats
+    // Multiply remainder by 10 to get first decimal digit
+    uint64_t frac = (rem * 10 + 512) / 1024; // rounded
+    if (frac == 10) { // handle carry, e.g. 1023.9 -> 1024.0
+      bytes++;
+      frac = 0;
+    }
+
+    if (frac > 0) usnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
+    else usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
+  }
+
+  return buf;
+}

ulib/string/conv.h

@@ -3,5 +3,6 @@
 
 unsigned long string_conv_strtoul(const char *nptr, char **endptr, int base);
 long string_conv_strtol(const char *nptr, char **endptr, int base);
+const char *human_size(uint64_t bytes, char *buf, size_t bufsize);
 
 #endif // ULIB_STRING_CONV_H_

user/fs/.gitignore

@@ -0,0 +1,2 @@
+*.o
+fs

user/fs/Makefile

@@ -0,0 +1,24 @@
+include $(ROOT)/mk/grabsrc.mk
+include ../Makefile.inc
+
+.PHONY: all clean
+
+TARGET := fs
+
+LDFLAGS += -L$(ROOT)/ulib -l:libulib.a
+
+SRCFILES := $(call GRABSRC, .)
+CFILES := $(call GET_CFILES, $(SRCFILES))
+OBJ := $(call GET_OBJ, $(SRCFILES))
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+all: $(TARGET)
+
+$(TARGET): $(OBJ)
+	$(LD) $^ $(LDFLAGS) -o $@
+	echo $$(realpath $(TARGET)) >> $(FILES)
+
+clean:
+	rm -f $(OBJ) $(TARGET)

user/fs/fetch.c

@@ -0,0 +1,35 @@
+#include <stddef.h>
+#include <stdint.h>
+#include <ulib.h>
+
+void fs_fetch(void) {
+  if (argslen() < 2) {
+    uprintf("fs: Not enough arguments\n");
+    return;
+  }
+
+  char *path = *(args()+1);
+
+  IOH ioh = ioctl(IOCTL_NOHANDLE, IOCTL_OPENF, (uint64_t)path, IOCTL_F_READ, 0);
+  if (ioh < 0) {
+    uprintf("fs: could not open %s\n", path);
+    return;
+  }
+
+  IoctlStat statbuf; ZERO(&statbuf);
+
+  ioctl(ioh, IOCTL_STAT, (uint64_t)&statbuf, 0, 0);
+  if (statbuf.type == IOCTLSTAT_FILE) {
+    uint8_t *buf = umalloc(statbuf.size+1);
+    string_memset(buf, 0, statbuf.size+1);
+
+    if (ioctl(ioh, IOCTL_READ, (uint64_t)buf, statbuf.size, 0) < 0) {
+      uprintf("fs: coult not read %s\n", path);
+      ufree(buf);
+      ioctl(ioh, IOCTL_CLOSEF, 0, 0, 0);
+      return;
+    }
+
+    uprintf("%s", buf);
+  }
+}

user/fs/main.c

@@ -0,0 +1,19 @@
+#include <stdint.h>
+#include <stddef.h>
+#include <ulib.h>
+
+extern void fs_fetch(void);
+
+void main(void) {
+  if (argslen() == 0) {
+    return;
+  }
+
+  char *cmd = args()[0];
+
+  if (string_strcmp(cmd, "fetch") == 0) {
+    fs_fetch();
+  } else {
+    uprintf("fs: unknown command %s\n", cmd);
+  }
+}

user/pctl/ls.c

@@ -18,38 +18,6 @@ static Arg ARGS[] = {
   ARG_END(),
 };
 
-const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
-  static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
-  int unit = 0;
-
-  // Scale down until value fits nicely
-  uint64_t rem = 0;
-  while (bytes >= 1024 && unit < (int)(sizeof(units)/sizeof(units[0])) - 1) {
-    rem = bytes % 1024;
-    bytes /= 1024;
-    unit++;
-  }
-
-  if (unit == 0) {
-    // Just bytes
-    usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
-  } else {
-    // Show one decimal place without using floats
-    // Multiply remainder by 10 to get first decimal digit
-    uint64_t frac = (rem * 10 + 512) / 1024; // rounded
-    if (frac == 10) { // handle carry, e.g. 1023.9 -> 1024.0
-      bytes++;
-      frac = 0;
-    }
-
-    if (frac > 0) usnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
-    else usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
-  }
-
-  return buf;
-}
-  
-  
 void pctl_ls(void) {
   int32_t ret;
   if ((ret = parse_args(SUBCMD_ARGS(), SUBCMD_ARGSLEN(), ARGS)) < 0) {