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-rw-r--r--utils/ldconfig.c900
1 files changed, 900 insertions, 0 deletions
diff --git a/utils/ldconfig.c b/utils/ldconfig.c
new file mode 100644
index 000000000..806604edd
--- /dev/null
+++ b/utils/ldconfig.c
@@ -0,0 +1,900 @@
+/*
+ * ldconfig - update shared library symlinks
+ *
+ * usage: ldconfig [-DvqnNX] [-f conf] [-C cache] [-r root] dir ...
+ * ldconfig -l [-Dv] lib ...
+ * ldconfig -p
+ * -D: debug mode, don't update links
+ * -v: verbose mode, print things as we go
+ * -q: quiet mode, don't print warnings
+ * -n: don't process standard directories
+ * -N: don't update the library cache
+ * -X: don't update the library links
+ * -l: library mode, manually link libraries
+ * -p: print the current library cache
+ * -f conf: use conf instead of /etc/ld.so.conf
+ * -C cache: use cache instead of /etc/ld.so.cache
+ * -r root: first, do a chroot to the indicated directory
+ * dir ...: directories to process
+ * lib ...: libraries to link
+ *
+ * Copyright 1994-2000 David Engel and Mitch D'Souza
+ *
+ * This program may be used for any purpose as long as this
+ * copyright notice is kept.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <link.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <ld_elf.h>
+#include "readsoname.h"
+
+struct exec
+{
+ unsigned long a_info; /* Use macros N_MAGIC, etc for access */
+ unsigned a_text; /* length of text, in bytes */
+ unsigned a_data; /* length of data, in bytes */
+ unsigned a_bss; /* length of uninitialized data area for file, in bytes */
+ unsigned a_syms; /* length of symbol table data in file, in bytes */
+ unsigned a_entry; /* start address */
+ unsigned a_trsize; /* length of relocation info for text, in bytes */
+ unsigned a_drsize; /* length of relocation info for data, in bytes */
+};
+
+#if !defined (N_MAGIC)
+#define N_MAGIC(exec) ((exec).a_info & 0xffff)
+#endif
+/* Code indicating object file or impure executable. */
+#define OMAGIC 0407
+/* Code indicating pure executable. */
+#define NMAGIC 0410
+/* Code indicating demand-paged executable. */
+#define ZMAGIC 0413
+/* This indicates a demand-paged executable with the header in the text.
+ The first page is unmapped to help trap NULL pointer references */
+#define QMAGIC 0314
+/* Code indicating core file. */
+#define CMAGIC 0421
+
+char *___strtok = NULL;
+
+/* For SunOS */
+#ifndef PATH_MAX
+#include <limits.h>
+#define PATH_MAX _POSIX_PATH_MAX
+#endif
+
+/* For SunOS */
+#ifndef N_MAGIC
+#define N_MAGIC(exec) ((exec).a_magic & 0xffff)
+#endif
+
+#define EXIT_OK 0
+#define EXIT_FATAL 128
+
+char *prog = NULL;
+int debug = 0; /* debug mode */
+int verbose = 0; /* verbose mode */
+int libmode = 0; /* library mode */
+int nocache = 0; /* don't build cache */
+int nolinks = 0; /* don't update links */
+
+char *conffile = LDSO_CONF; /* default conf file */
+char *cachefile = LDSO_CACHE; /* default cache file */
+void cache_print(void);
+void cache_dolib(const char *dir, const char *so, int libtype);
+void cache_write(void);
+
+/* These two are used internally -- you shouldn't need to use them */
+static void verror_msg(const char *s, va_list p)
+{
+ fflush(stdout);
+ fprintf(stderr, "%s: ", prog);
+ vfprintf(stderr, s, p);
+}
+
+extern void warnx(const char *s, ...)
+{
+ va_list p;
+
+ va_start(p, s);
+ verror_msg(s, p);
+ va_end(p);
+ fprintf(stderr, "\n");
+}
+
+extern void err(int errnum, const char *s, ...)
+{
+ va_list p;
+
+ va_start(p, s);
+ verror_msg(s, p);
+ va_end(p);
+ fprintf(stderr, "\n");
+ exit(errnum);
+}
+
+static void vperror_msg(const char *s, va_list p)
+{
+ int err = errno;
+
+ if (s == 0)
+ s = "";
+ verror_msg(s, p);
+ if (*s)
+ s = ": ";
+ fprintf(stderr, "%s%s\n", s, strerror(err));
+}
+
+extern void warn(const char *s, ...)
+{
+ va_list p;
+
+ va_start(p, s);
+ vperror_msg(s, p);
+ va_end(p);
+}
+
+void *xmalloc(size_t size)
+{
+ void *ptr;
+ if ((ptr = malloc(size)) == NULL)
+ err(EXIT_FATAL,"out of memory");
+ return ptr;
+}
+
+char *xstrdup(const char *str)
+{
+ char *ptr;
+ if ((ptr = strdup(str)) == NULL)
+ err(EXIT_FATAL,"out of memory");
+ return ptr;
+}
+
+/* If shared library, return a malloced copy of the soname and set the
+ type, else return NULL.
+
+ expected_type should be either LIB_ANY or one of the following:-
+ LIB_DLL
+ LIB_ELF
+ LIB_ELF_LIBC5
+ LIB_ELF_LIBC6
+
+ If the lib is ELF and we can not deduce the type the type will
+ be set based on expected_type.
+
+ If the expected, actual/deduced types missmatch we display a warning
+ and use the actual/deduced type.
+*/
+char *is_shlib(const char *dir, const char *name, int *type,
+ int *islink, int expected_type)
+{
+ char *good = NULL;
+ char *cp, *cp2;
+ FILE *file;
+ struct exec exec;
+ ElfW(Ehdr) *elf_hdr;
+ struct stat statbuf;
+ char buff[4096];
+
+ /* see if name is of the form libZ.so* */
+ if ((strncmp(name, "lib", 3) == 0 || strncmp(name, "ld-", 3) == 0) && \
+ name[strlen(name)-1] != '~' && (cp = strstr(name, ".so")))
+ {
+ /* find the start of the Vminor part, if any */
+ if (cp[3] == '.' && (cp2 = strchr(cp + 4, '.')))
+ cp = cp2;
+ else
+ cp = cp + strlen(cp);
+
+ /* construct the full path name */
+ sprintf(buff, "%s%s%s", dir, (*dir && strcmp(dir, "/")) ?
+ "/" : "", name);
+
+ /* first, make sure it's a regular file */
+ if (lstat(buff, &statbuf))
+ warn("skipping %s", buff);
+ else if (!S_ISREG(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode))
+ warnx("%s is not a regular file or symlink, skipping", buff);
+ else
+ {
+ /* is it a regular file or a symlink */
+ *islink = S_ISLNK(statbuf.st_mode);
+
+ /* then try opening it */
+ if (!(file = fopen(buff, "rb")))
+ warn("skipping %s", buff);
+ else
+ {
+ /* now make sure it's a shared library */
+ if (fread(&exec, sizeof exec, 1, file) < 1)
+ warnx("can't read header from %s, skipping", buff);
+ else if (N_MAGIC(exec) != ZMAGIC && N_MAGIC(exec) != QMAGIC)
+ {
+ elf_hdr = (ElfW(Ehdr) *) &exec;
+ if (elf_hdr->e_ident[0] != 0x7f ||
+ strncmp(&elf_hdr->e_ident[1], "ELF",3) != 0)
+ {
+ /* silently ignore linker scripts */
+ if (strncmp((char *)&exec, "/* GNU ld", 9) != 0)
+ warnx("%s is not a shared library, skipping", buff);
+ }
+ else
+ {
+ /* always call readsoname to update type */
+ if(expected_type == LIB_DLL) {
+ warnx("%s is not an a.out library, its ELF!\n", buff);
+ expected_type=LIB_ANY;
+ }
+ *type = LIB_ELF;
+ good = readsoname(buff, file, expected_type, type,
+ elf_hdr->e_ident[EI_CLASS]);
+ if (good == NULL || *islink)
+ {
+ if (good != NULL)
+ free(good);
+ good = xstrdup(name);
+ }
+ else
+ {
+ /* if the soname does not match the filename,
+ issue a warning, but only in debug mode. */
+ int len = strlen(good);
+ if (debug && (strncmp(good, name, len) != 0 ||
+ (name[len] != '\0' && name[len] != '.')))
+ warnx("%s has inconsistent soname (%s)", buff, good);
+ }
+ }
+ }
+ else
+ {
+ if (*islink)
+ good = xstrdup(name);
+ else
+ {
+ good = xmalloc(cp - name + 1);
+ strncpy(good, name, cp - name);
+ good[cp - name] = '\0';
+ }
+ if(expected_type != LIB_ANY && expected_type != LIB_DLL)
+ {
+ warnx("%s is not an ELF library, its an a.out DLL!", buff);
+ expected_type=LIB_ANY;
+ }
+
+ *type = LIB_DLL;
+ }
+ fclose(file);
+ }
+ }
+ }
+
+ return good;
+}
+
+/* update the symlink to new library */
+void link_shlib(const char *dir, const char *file, const char *so)
+{
+ int change = 1;
+ char libname[4096];
+ char linkname[4096];
+ struct stat libstat;
+ struct stat linkstat;
+
+ /* construct the full path names */
+ sprintf(libname, "%s/%s", dir, file);
+ sprintf(linkname, "%s/%s", dir, so);
+
+ /* see if a link already exists */
+ if (!stat(linkname, &linkstat))
+ {
+ /* now see if it's the one we want */
+ if (stat(libname, &libstat))
+ warn("can't stat %s", libname);
+ else if (libstat.st_dev == linkstat.st_dev &&
+ libstat.st_ino == linkstat.st_ino)
+ change = 0;
+ }
+
+ /* then update the link, if required */
+ if (change > 0 && !nolinks)
+ {
+ if (!lstat(linkname, &linkstat))
+ {
+ if (!S_ISLNK(linkstat.st_mode))
+ {
+ warnx("%s is not a symlink", linkname);
+ change = -1;
+ }
+ else if (remove(linkname))
+ {
+ warn("can't unlink %s", linkname);
+ change = -1;
+ }
+ }
+ if (change > 0)
+ {
+ if (symlink(file, linkname))
+ {
+ warn("can't link %s to %s", linkname, file);
+ change = -1;
+ }
+ }
+ }
+
+ /* some people like to know what we're doing */
+ if (verbose > 0)
+ printf("\t%s => %s%s\n", so, file,
+ change < 0 ? " (SKIPPED)" :
+ (change > 0 ? " (changed)" : ""));
+
+ return;
+}
+
+/* figure out which library is greater */
+int libcmp(char *p1, char *p2)
+{
+ while (*p1)
+ {
+ if (isdigit(*p1) && isdigit(*p2))
+ {
+ /* must compare this numerically */
+ int v1, v2;
+ v1 = strtoul(p1, &p1, 10);
+ v2 = strtoul(p2, &p2, 10);
+ if (v1 != v2)
+ return v1 - v2;
+ }
+ else if (isdigit(*p1) && !isdigit(*p2))
+ return 1;
+ else if (!isdigit(*p1) && isdigit(*p2))
+ return -1;
+ else if (*p1 != *p2)
+ return *p1 - *p2;
+ else
+ p1++, p2++;
+ }
+
+ return *p1 - *p2;
+}
+
+struct lib
+{
+ char *so; /* soname of a library */
+ char *name; /* name of a library */
+ int libtype; /* type of a library */
+ int islink; /* is it a symlink */
+ struct lib *next; /* next library in list */
+};
+
+/* update all shared library links in a directory */
+void scan_dir(const char *rawname)
+{
+ DIR *dir;
+ const char *name;
+ struct dirent *ent;
+ char *so, *path, *path_n;
+ struct lib *lp, *libs = NULL;
+ int i, libtype, islink, expected_type = LIB_ANY;
+
+ /* We need a writable copy of this string */
+ path = strdup(rawname);
+ if (!path) {
+ err(EXIT_FATAL, "Out of memory!\n");
+ }
+ /* Eliminate all double //s */
+ path_n=path;
+ while((path_n=strstr(path_n, "//"))) {
+ i = strlen(path_n);
+ memmove(path_n, path_n+1, i-1);
+ *(path_n + i - 1)='\0';
+ }
+ name = path;
+
+#if 0
+ char *t;
+ /* Check for an embedded expected type */
+ t=strrchr(name, '=');
+ if( t )
+ {
+ *t++ = '\0'; /* Skip = char */
+ if(strcasecmp(t, "libc4") == 0)
+ {
+ expected_type = LIB_DLL;
+ }
+ else
+ {
+ if(strcasecmp(t, "libc5") == 0)
+ {
+ expected_type = LIB_ELF_LIBC5;
+ }
+ else
+ {
+ if(strcasecmp(t, "libc6") == 0)
+ {
+ expected_type = LIB_ELF_LIBC6;
+ }
+ else
+ {
+ if(strcasecmp(t, "libc0") == 0)
+ {
+ expected_type = LIB_ELF_LIBC0;
+ }
+ else
+ {
+ warnx("Unknown type field '%s' for dir '%s' - ignored\n", t, name);
+ expected_type = LIB_ANY;
+ }
+ }
+ }
+ }
+ }
+#endif
+
+ /* let 'em know what's going on */
+ if (verbose > 0)
+ printf("%s:\n", name);
+
+ /* if we can't open it, we can't do anything */
+ if ((dir = opendir(name)) == NULL)
+ {
+ warn("skipping %s", name);
+ free(path);
+ return;
+ }
+
+ /* yes, we have to look at every single file */
+ while ((ent = readdir(dir)) != NULL)
+ {
+ /* if it's not a shared library, don't bother */
+ if ((so = is_shlib(name, ent->d_name, &libtype, &islink, expected_type)) == NULL)
+ continue;
+
+ /* have we already seen one with the same so name? */
+ for (lp = libs; lp; lp = lp->next)
+ {
+ if (strcmp(so, lp->so) == 0)
+ {
+ /* we have, which one do we want to use? */
+ if ((!islink && lp->islink) ||
+ (islink == lp->islink &&
+ libcmp(ent->d_name, lp->name) > 0))
+ {
+ /* let's use the new one */
+ free(lp->name);
+ lp->name = xstrdup(ent->d_name);
+ lp->libtype = libtype;
+ lp->islink = islink;
+ }
+ break;
+ }
+ }
+
+ /* congratulations, you're the first one we've seen */
+ if (!lp)
+ {
+ lp = xmalloc(sizeof *lp);
+ lp->so = xstrdup(so);
+ lp->name = xstrdup(ent->d_name);
+ lp->libtype = libtype;
+ lp->islink = islink;
+ lp->next = libs;
+ libs = lp;
+ }
+
+ free(so);
+ }
+
+ /* don't need this any more */
+ closedir(dir);
+
+ /* now we have all the latest libs, update the links */
+ for (lp = libs; lp; lp = lp->next)
+ {
+ if (!lp->islink)
+ link_shlib(name, lp->name, lp->so);
+#ifdef USE_CACHE
+ if (!nocache)
+ cache_dolib(name, lp->so, lp->libtype);
+#endif
+ }
+
+ /* always try to clean up after ourselves */
+ while (libs)
+ {
+ lp = libs->next;
+ free(libs->so);
+ free(libs->name);
+ free(libs);
+ libs = lp;
+ }
+
+ free(path);
+ return;
+}
+
+/* return the list of system-specific directories */
+char *get_extpath(void)
+{
+ char *res = NULL, *cp;
+ FILE *file;
+ struct stat stat;
+
+ if ((file = fopen(conffile, "r")) != NULL)
+ {
+ fstat(fileno(file), &stat);
+ res = xmalloc(stat.st_size + 1);
+ fread(res, 1, stat.st_size, file);
+ fclose(file);
+ res[stat.st_size] = '\0';
+
+ /* convert comments fo spaces */
+ for (cp = res; *cp; /*nada*/) {
+ if (*cp == '#') {
+ do
+ *cp++ = ' ';
+ while (*cp && *cp != '\n');
+ } else {
+ cp++;
+ }
+ }
+ }
+
+ return res;
+}
+
+#ifdef USE_CACHE
+typedef struct liblist
+{
+ int flags;
+ int sooffset;
+ int liboffset;
+ char *soname;
+ char *libname;
+ struct liblist *next;
+} liblist_t;
+
+static header_t magic = { LDSO_CACHE_MAGIC, LDSO_CACHE_VER, 0 };
+static liblist_t *lib_head = NULL;
+
+static int liblistcomp(liblist_t *x, liblist_t *y)
+{
+ int res;
+
+ if ((res = libcmp(x->soname, y->soname)) == 0)
+ {
+ res = libcmp(strrchr(x->libname, '/') + 1,
+ strrchr(y->libname, '/') + 1);
+ }
+
+ return res;
+}
+
+void cache_dolib(const char *dir, const char *so, int libtype)
+{
+ char fullpath[PATH_MAX];
+ liblist_t *new_lib, *cur_lib;
+
+ magic.nlibs++;
+ sprintf(fullpath, "%s/%s", dir, so);
+ new_lib = xmalloc(sizeof (liblist_t));
+ new_lib->flags = libtype;
+ new_lib->soname = xstrdup(so);
+ new_lib->libname = xstrdup(fullpath);
+
+ if (lib_head == NULL || liblistcomp(new_lib, lib_head) > 0)
+ {
+ new_lib->next = lib_head;
+ lib_head = new_lib;
+ }
+ else
+ {
+ for (cur_lib = lib_head; cur_lib->next != NULL &&
+ liblistcomp(new_lib, cur_lib->next) <= 0;
+ cur_lib = cur_lib->next)
+ /* nothing */;
+ new_lib->next = cur_lib->next;
+ cur_lib->next = new_lib;
+ }
+}
+
+void cache_write(void)
+{
+ int cachefd;
+ int stroffset = 0;
+ char tempfile[4096];
+ liblist_t *cur_lib;
+
+ if (!magic.nlibs)
+ return;
+
+ sprintf(tempfile, "%s~", cachefile);
+
+ if (unlink(tempfile) && errno != ENOENT)
+ err(EXIT_FATAL,"can't unlink %s (%s)", tempfile, strerror(errno));
+
+ if ((cachefd = creat(tempfile, 0644)) < 0)
+ err(EXIT_FATAL,"can't create %s (%s)", tempfile, strerror(errno));
+
+ if (write(cachefd, &magic, sizeof (header_t)) != sizeof (header_t))
+ err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+
+ for (cur_lib = lib_head; cur_lib != NULL; cur_lib = cur_lib->next)
+ {
+ cur_lib->sooffset = stroffset;
+ stroffset += strlen(cur_lib->soname) + 1;
+ cur_lib->liboffset = stroffset;
+ stroffset += strlen(cur_lib->libname) + 1;
+ if (write(cachefd, cur_lib, sizeof (libentry_t)) !=
+ sizeof (libentry_t))
+ err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+ }
+
+ for (cur_lib = lib_head; cur_lib != NULL; cur_lib = cur_lib->next)
+ {
+ if (write(cachefd, cur_lib->soname, strlen(cur_lib->soname) + 1)
+ != strlen(cur_lib->soname) + 1)
+ err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+ if (write(cachefd, cur_lib->libname, strlen(cur_lib->libname) + 1)
+ != strlen(cur_lib->libname) + 1)
+ err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+ }
+
+ if (close(cachefd))
+ err(EXIT_FATAL,"can't close %s (%s)", tempfile, strerror(errno));
+
+ if (chmod(tempfile, 0644))
+ err(EXIT_FATAL,"can't chmod %s (%s)", tempfile, strerror(errno));
+
+ if (rename(tempfile, cachefile))
+ err(EXIT_FATAL,"can't rename %s (%s)", tempfile, strerror(errno));
+}
+
+void cache_print(void)
+{
+ caddr_t c;
+ struct stat st;
+ int fd = 0;
+ char *strs;
+ header_t *header;
+ libentry_t *libent;
+
+ if (stat(cachefile, &st) || (fd = open(cachefile, O_RDONLY))<0)
+ err(EXIT_FATAL,"can't read %s (%s)", cachefile, strerror(errno));
+ if ((c = mmap(0,st.st_size, PROT_READ, MAP_SHARED ,fd, 0)) == (caddr_t)-1)
+ err(EXIT_FATAL,"can't map %s (%s)", cachefile, strerror(errno));
+ close(fd);
+
+ if (memcmp(((header_t *)c)->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN))
+ err(EXIT_FATAL,"%s cache corrupt", cachefile);
+
+ if (memcmp(((header_t *)c)->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN))
+ err(EXIT_FATAL,"wrong cache version - expected %s", LDSO_CACHE_VER);
+
+ header = (header_t *)c;
+ libent = (libentry_t *)(c + sizeof (header_t));
+ strs = (char *)&libent[header->nlibs];
+
+ printf("%d libs found in cache `%s' (version %s)\n",
+ header->nlibs, cachefile, LDSO_CACHE_VER);
+
+ for (fd = 0; fd < header->nlibs; fd++)
+ {
+ printf("\t%s ", strs + libent[fd].sooffset);
+ switch (libent[fd].flags & ~LIB_ELF64)
+ {
+ case LIB_DLL:
+ printf("(libc4)");
+ break;
+ case LIB_ELF:
+ printf("(ELF%s)", libent[fd].flags & LIB_ELF64 ? "/64" : "");
+ break;
+ case LIB_ELF_LIBC5:
+ case LIB_ELF_LIBC6:
+ printf("(libc%d%s)", (libent[fd].flags & ~LIB_ELF64) + 3,
+ libent[fd].flags & LIB_ELF64 ? "/64" : "");
+ break;
+ default:
+ printf("(unknown)");
+ break;
+ }
+ printf(" => %s\n", strs + libent[fd].liboffset);
+ }
+
+ munmap (c,st.st_size);
+}
+#else
+void cache_print(void)
+{
+ warnx("Cache support disabled\n");
+}
+#endif
+
+void usage(void)
+{
+ fprintf(stderr,
+ "ldconfig - updates symlinks for shared libraries\n\n"
+ "Usage: ldconfig [-DvqnNX] [-f conf] [-C cache] [-r root] dir ...\n"
+ " ldconfig -l [-Dv] lib ...\n"
+ " ldconfig -p\n\nOptions:\n"
+ "\t-D:\t\tdebug mode, don't update links\n"
+ "\t-v:\t\tverbose mode, print things as we go\n"
+ "\t-q:\t\tquiet mode, don't print warnings\n"
+ "\t-n:\t\tdon't process standard directories\n"
+ "\t-N:\t\tdon't update the library cache\n"
+ "\t-X:\t\tdon't update the library links\n"
+ "\t-l:\t\tlibrary mode, manually link libraries\n"
+ "\t-p:\t\tprint the current library cache\n"
+ "\t-f conf :\tuse conf instead of %s\n"
+ "\t-C cache:\tuse cache instead of %s\n"
+ "\t-r root :\tfirst, do a chroot to the indicated directory\n"
+ "\tdir ... :\tdirectories to process\n"
+ "\tlib ... :\tlibraries to link\n\n",
+ LDSO_CONF, LDSO_CACHE
+ );
+ exit(EXIT_FATAL);
+}
+
+#define DIR_SEP ":, \t\n"
+int main(int argc, char **argv)
+{
+ int i, c;
+ int nodefault = 0;
+ int printcache = 0;
+ char *cp, *dir, *so;
+ char *extpath;
+ int libtype, islink;
+ char *chroot_dir = NULL;
+
+ prog = argv[0];
+ opterr = 0;
+
+ while ((c = getopt(argc, argv, "DvqnNXlpf:C:r:")) != EOF)
+ switch (c)
+ {
+ case 'D':
+ debug = 1; /* debug mode */
+ nocache = 1;
+ nolinks = 1;
+ verbose = 1;
+ break;
+ case 'v':
+ verbose = 1; /* verbose mode */
+ break;
+ case 'q':
+ if (verbose <= 0)
+ verbose = -1; /* quiet mode */
+ break;
+ case 'n':
+ nodefault = 1; /* no default dirs */
+ nocache = 1;
+ break;
+ case 'N':
+ nocache = 1; /* don't build cache */
+ break;
+ case 'X':
+ nolinks = 1; /* don't update links */
+ break;
+ case 'l':
+ libmode = 1; /* library mode */
+ break;
+ case 'p':
+ printcache = 1; /* print cache */
+ break;
+ case 'f':
+ conffile = optarg; /* alternate conf file */
+ break;
+ case 'C':
+ cachefile = optarg; /* alternate cache file */
+ break;
+ case 'r':
+ chroot_dir = optarg;
+ break;
+ default:
+ usage();
+ break;
+
+ /* THE REST OF THESE ARE UNDOCUMENTED AND MAY BE REMOVED
+ IN FUTURE VERSIONS. */
+ }
+
+ if (chroot_dir && *chroot_dir) {
+ if (chroot(chroot_dir) < 0)
+ err(EXIT_FATAL,"couldn't chroot to %s (%s)", chroot_dir, strerror(errno));
+ if (chdir("/") < 0)
+ err(EXIT_FATAL,"couldn't chdir to / (%s)", strerror(errno));
+ }
+
+ /* allow me to introduce myself, hi, my name is ... */
+ if (verbose > 0)
+ printf("%s: uClibc version\n", argv[0]);
+
+ if (printcache)
+ {
+ /* print the cache -- don't you trust me? */
+ cache_print();
+ exit(EXIT_OK);
+ }
+ else if (libmode)
+ {
+ /* so you want to do things manually, eh? */
+
+ /* ok, if you're so smart, which libraries do we link? */
+ for (i = optind; i < argc; i++)
+ {
+ /* split into directory and file parts */
+ if (!(cp = strrchr(argv[i], '/')))
+ {
+ dir = "."; /* no dir, only a filename */
+ cp = argv[i];
+ }
+ else
+ {
+ if (cp == argv[i])
+ dir = "/"; /* file in root directory */
+ else
+ dir = argv[i];
+ *cp++ = '\0'; /* neither of the above */
+ }
+
+ /* we'd better do a little bit of checking */
+ if ((so = is_shlib(dir, cp, &libtype, &islink, LIB_ANY)) == NULL)
+ err(EXIT_FATAL,"%s%s%s is not a shared library", dir,
+ (*dir && strcmp(dir, "/")) ? "/" : "", cp);
+
+ /* so far, so good, maybe he knows what he's doing */
+ link_shlib(dir, cp, so);
+ }
+ }
+ else
+ {
+ /* the lazy bum want's us to do all the work for him */
+
+ /* don't cache dirs on the command line */
+ int nocache_save = nocache;
+ nocache = 1;
+
+ /* OK, which directories should we do? */
+ for (i = optind; i < argc; i++)
+ scan_dir(argv[i]);
+
+ /* restore the desired caching state */
+ nocache = nocache_save;
+
+ /* look ma, no defaults */
+ if (!nodefault)
+ {
+ /* I guess the defaults aren't good enough */
+ if ((extpath = get_extpath()))
+ {
+ for (cp = strtok(extpath, DIR_SEP); cp;
+ cp = strtok(NULL, DIR_SEP))
+ scan_dir(cp);
+ free(extpath);
+ }
+
+ scan_dir(UCLIBC_RUNTIME_PREFIX "/usr/X11R6/lib");
+ scan_dir(UCLIBC_RUNTIME_PREFIX "/usr/lib");
+ scan_dir(UCLIBC_RUNTIME_PREFIX "/lib");
+ }
+
+#ifdef USE_CACHE
+ if (!nocache)
+ cache_write();
+#endif
+ }
+
+ exit(EXIT_OK);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 10:23:19 +0000