diff options
Diffstat (limited to 'pcitool/sysinfo.c')
| -rw-r--r-- | pcitool/sysinfo.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/pcitool/sysinfo.c b/pcitool/sysinfo.c deleted file mode 100644 index d6f57fe..0000000 --- a/pcitool/sysinfo.c +++ /dev/null @@ -1,172 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <string.h> -#include <strings.h> - -#define MEMINFO_FILE "/proc/meminfo" -#define MTAB_FILE "/etc/mtab" - -#define BAD_OPEN_MESSAGE \ -"Error: /proc must be mounted\n" \ -" To mount /proc at boot you need an /etc/fstab line like:\n" \ -" /proc /proc proc defaults\n" \ -" In the meantime, run \"mount /proc /proc -t proc\"\n" - -/* This macro opens filename only if necessary and seeks to 0 so - * that successive calls to the functions are more efficient. - * It also reads the current contents of the file into the global buf. - */ -#define FILE_TO_BUF(filename) do{ \ - static int fd, local_n; \ - if ((fd = open(filename, O_RDONLY)) == -1) { \ - fputs(BAD_OPEN_MESSAGE, stderr); \ - fflush(NULL); \ - _exit(102); \ - } \ - lseek(fd, 0L, SEEK_SET); \ - if ((local_n = read(fd, buf, sizeof buf - 1)) < 0) { \ - perror(filename); \ - fflush(NULL); \ - _exit(103); \ - } \ - buf[local_n] = '\0'; \ - close(fd); \ -}while(0) - - -typedef struct mem_table_struct { - const char *name; /* memory type name */ - unsigned long *slot; /* slot in return struct */ -} mem_table_struct; - -static int compare_mem_table_structs(const void *a, const void *b){ - return strcmp(((const mem_table_struct*)a)->name,((const mem_table_struct*)b)->name); -} - -size_t get_free_memory(void){ - char buf[4096]; - unsigned long kb_main_buffers, kb_main_cached, kb_main_free; - char namebuf[16]; /* big enough to hold any row name */ - mem_table_struct findme = { namebuf, NULL}; - mem_table_struct *found; - char *head; - char *tail; - - const mem_table_struct mem_table[] = { - {"Buffers", &kb_main_buffers}, // important - {"Cached", &kb_main_cached}, // important - {"MemFree", &kb_main_free}, // important - }; - const int mem_table_count = sizeof(mem_table)/sizeof(mem_table_struct); - - FILE_TO_BUF(MEMINFO_FILE); - - head = buf; - for(;;){ - tail = strchr(head, ':'); - if(!tail) break; - *tail = '\0'; - if(strlen(head) >= sizeof(namebuf)){ - head = tail+1; - goto nextline; - } - strcpy(namebuf,head); - found = bsearch(&findme, mem_table, mem_table_count, - sizeof(mem_table_struct), compare_mem_table_structs - ); - head = tail+1; - if(!found) goto nextline; - *(found->slot) = strtoul(head,&tail,10); -nextline: - tail = strchr(head, '\n'); - if(!tail) break; - head = tail+1; - } - - return (kb_main_buffers + kb_main_cached + kb_main_free) * 1024; -} - - -int get_file_fs(const char *fname, size_t size, char *fs) { - int err = 0; - char buf[4096]; - char *fn; - - char *head; - char *tail; - - size_t len, max = 0; - struct stat st; - - if ((!fname)||(!fs)||(size < 3)) return -1; - - if (*fname == '/') { - fn = (char*)fname; - } else { - if (!getcwd(buf, 4095)) return -1; - fn = malloc(strlen(fname) + strlen(buf) + 2); - if (!fn) return -1; - sprintf(fn, "%s/%s", buf, fname); - } - - if (!stat(fn, &st)) { - if (S_ISBLK(st.st_mode)) { - strcpy(fs, "raw"); - goto clean; - } - } - - FILE_TO_BUF(MTAB_FILE); - - head = buf; - for(;;){ - head = strchr(head, ' '); - if(!head) break; - - head += 1; - tail = strchr(head, ' '); - if(!tail) break; - - *tail = '\0'; - - len = strlen(head); - if((len <= max)||(strncmp(head, fn, len))) { - head = tail+1; - goto nextline; - } - - head = tail + 1; - tail = strchr(head, ' '); - if(!tail) break; - - *tail = '\0'; - - if (!strncasecmp(head,"root",4)) { - head = tail+1; - goto nextline; - } - - max = len; - - if (strlen(head) >= size) err = -1; - else { - err = 0; - strcpy(fs, head); - } - - head = tail+1; -nextline: - tail = strchr(head, '\n'); - if(!tail) break; - head = tail+1; - } - -clean: - if (fn != fname) free(fn); - - return err; -} |