Initial revision

libproc/psdata.h

@@ -0,0 +1,103 @@
+/*
+ * psdata.h
+ *
+ * Jeffrey A. Uphoff <juphoff@nrao.edu>, 1995, 1996.
+ * Michael K. Johnson.
+ * Bruno Lankester.
+ * (And others I'm sure...)
+ *
+ */
+
+/*
+ * Capabilities are for reading system images and producing maps for
+ * WCHAN output.
+ *
+ * AOUT_CAPABLE and ELF_CAPABLE may have 32-bit word size limitations
+ * and have only been tested by the maintainer on Intel systems.  They
+ * are retained in the source tree in case they are useful; they are
+ * intended to be generally deprecated.
+ *
+ * BFD_CAPABLE should work on any system with BFD.
+ *
+ * Set the capabilities in the top-level Makefile.
+ */
+
+#if defined(ELF_CAPABLE)
+# define ELF_OBJECT 1
+# define ELF_FUNC 2
+#endif
+
+#include <sys/types.h>
+#include <linux/utsname.h>
+
+#define        PSDATABASE      "/etc/psdatabase"
+
+struct dbtbl_s {
+  off_t off;			/* offset in psdatabase */
+  int nsym;			/* # symbols */
+  int size;			/* size of array + strings */
+};
+
+/*
+ * header of psdatabase
+ */
+struct psdb_hdr {
+  /* Current procps package version goes here.  kmemps doesn't like this. */
+  char magic[32];
+  /* 
+   * These are not functional--they only reside in the database for
+   * informational purposes (i.e. if you want to look at the raw
+   * database and see what kernel it's for).
+   */
+  char uts_release[__NEW_UTS_LEN];
+  char uts_version[__NEW_UTS_LEN];
+  /* 
+   * Again, this is not functional, it's just there for information: it
+   * shows the path to the uncompressed kernel image that was used to
+   * generate this database.
+   */
+  char sys_path[128];
+  /* List of all functions. */
+  struct dbtbl_s fncs;
+  /* 
+   * This is currently only used to look up system_utsname while
+   * psupdate is building the database--it really should be phased out!
+   */
+  /* List of all bss and data symbols. */
+  struct dbtbl_s vars;
+  /* 
+   * The list of tty names that kmemps likes/uses in no longer present
+   * in the procps psdatabase--it was never being built by procps'
+   * psupdate anyway, so I removed the entry from the database header.
+   */
+};
+
+struct sym_s {
+  unsigned long addr;		/* core address in kernel */
+  int name;			/* offset from strings ptr */
+};
+
+struct tbl_s {
+  struct sym_s *tbl;
+  int nsym;
+  char *strings;		/* ptr to start of strings */
+};
+
+extern struct psdb_hdr db_hdr;
+extern struct tbl_s fncs, vars;
+
+int read_tbl (struct dbtbl_s *, struct tbl_s *);
+void *xmalloc (unsigned int);
+void *xrealloc (void *, unsigned int);
+
+#define MLSEEK(FD, WHERE, WHENCE, ERROR)\
+if (lseek ((FD), (WHERE), (WHENCE)) == -1) {\
+  perror ((ERROR));\
+  exit (errno);\
+}
+
+#define MREAD(FD, WHAT, SIZE, ERROR)\
+if (read ((FD), (WHAT), (SIZE)) != (SIZE)) {\
+  perror ((ERROR));\
+  exit (errno);\
+}