a071c6801c
The sshd restart looks potentially useful, but it has not run for a long time because the file /etc/rc.d/init.d/sshd does not exit anymore, so it appears unnecessary after all.
268 lines
7.9 KiB
Diff
268 lines
7.9 KiB
Diff
A helper program is needed to clean up the system configuration
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early during RPM package installation, so that other scriptlets
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can run successfully.
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diff --git a/elf/Makefile b/elf/Makefile
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index 2a432d8beebcd207..368dcae477fff2ae 100644
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--- a/elf/Makefile
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+++ b/elf/Makefile
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@@ -117,6 +117,14 @@ others-extras = $(ldconfig-modules)
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endif
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endif
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+# This needs to be statically linked because it is executed at a time
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+# when there might be incompatible shared objects on disk, and the
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+# purpose of this program is to remove them (among other things).
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+others-static += glibc_post_upgrade
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+others += glibc_post_upgrade
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+glibc_post_upgrade-modules := static-stubs
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+CFLAGS-glibc_post_upgrade.c += -DGCONV_MODULES_DIR='"$(gconvdir)"'
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+
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# To find xmalloc.c and xstrdup.c
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vpath %.c ../locale/programs
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@@ -559,6 +567,8 @@ $(objpfx)sln: $(sln-modules:%=$(objpfx)%.o)
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$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
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+$(objpfx)glibc_post_upgrade: $(glibc_post_upgrade-modules:%=$(objpfx)%.o)
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+
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SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
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CFLAGS-ldconfig.c += $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
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-D'SLIBDIR="$(slibdir)"'
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diff --git a/elf/glibc_post_upgrade.c b/elf/glibc_post_upgrade.c
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new file mode 100644
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index 0000000000000000..19b59f70e2308032
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--- /dev/null
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+++ b/elf/glibc_post_upgrade.c
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@@ -0,0 +1,229 @@
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+#include <sys/types.h>
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+#include <sys/wait.h>
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+#include <stdio.h>
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+#include <errno.h>
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+#include <unistd.h>
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+#include <sys/time.h>
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+#include <dirent.h>
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+#include <stddef.h>
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+#include <fcntl.h>
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+#include <string.h>
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+
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+#define LD_SO_CONF "/etc/ld.so.conf"
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+#define ICONVCONFIG "/usr/sbin/iconvconfig"
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+
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+#define verbose_exec(failcode, path...) \
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+ do \
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+ { \
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+ char *const arr[] = { path, NULL }; \
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+ vexec (failcode, arr); \
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+ } while (0)
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+
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+__attribute__((noinline)) static void vexec (int failcode, char *const path[]);
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+__attribute__((noinline)) static void says (const char *str);
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+__attribute__((noinline)) static void sayn (long num);
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+__attribute__((noinline)) static void message (char *const path[]);
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+
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+int
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+main (void)
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+{
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+ char initpath[256];
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+
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+ char buffer[4096];
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+ struct pref {
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+ const char *p;
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+ int len;
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+ } prefix[] = { { "libc-", 5 }, { "libm-", 5 },
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+ { "librt-", 6 }, { "libpthread-", 11 },
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+ { "librtkaio-", 10 }, { "libthread_db-", 13 } };
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+ int i, j, fd;
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+ off_t base;
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+ ssize_t ret;
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+
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+ /* In order to support in-place upgrades, we must immediately remove
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+ obsolete platform directories after installing a new glibc
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+ version. RPM only deletes files removed by updates near the end
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+ of the transaction. If we did not remove the obsolete platform
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+ directories here, they would be preferred by the dynamic linker
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+ during the execution of subsequent RPM scriptlets, likely
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+ resulting in process startup failures. */
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+ const char *remove_dirs[] =
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+ {
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+#if defined (__i386__)
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+ "/lib/i686",
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+ "/lib/i686/nosegneg",
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+#elif defined (__powerpc64__) && _CALL_ELF != 2
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+ "/lib64/power6",
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+#endif
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+ };
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+ for (j = 0; j < sizeof (remove_dirs) / sizeof (remove_dirs[0]); ++j)
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+ {
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+ size_t rmlen = strlen (remove_dirs[j]);
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+ fd = open (remove_dirs[j], O_RDONLY);
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+ if (fd >= 0
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+ && (ret = getdirentries (fd, buffer, sizeof (buffer), &base))
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+ >= (ssize_t) offsetof (struct dirent, d_name))
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+ {
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+ for (base = 0; base + offsetof (struct dirent, d_name) < ret; )
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+ {
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+ struct dirent *d = (struct dirent *) (buffer + base);
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+
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+ for (i = 0; i < sizeof (prefix) / sizeof (prefix[0]); i++)
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+ if (! strncmp (d->d_name, prefix[i].p, prefix[i].len))
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+ {
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+ char *p = d->d_name + prefix[i].len;
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+
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+ while (*p == '.' || (*p >= '0' && *p <= '9')) p++;
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+ if (p[0] == 's' && p[1] == 'o' && p[2] == '\0'
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+ && p + 3 - d->d_name
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+ < sizeof (initpath) - rmlen - 1)
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+ {
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+ memcpy (initpath, remove_dirs[j], rmlen);
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+ initpath[rmlen] = '/';
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+ strcpy (initpath + rmlen + 1, d->d_name);
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+ unlink (initpath);
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+ break;
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+ }
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+ }
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+ base += d->d_reclen;
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+ }
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+ close (fd);
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+ }
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+ }
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+
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+ int ldsocfd = open (LD_SO_CONF, O_RDONLY);
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+ struct stat ldsocst;
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+ if (ldsocfd >= 0 && fstat (ldsocfd, &ldsocst) >= 0)
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+ {
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+ char p[ldsocst.st_size + 1];
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+ if (read (ldsocfd, p, ldsocst.st_size) == ldsocst.st_size)
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+ {
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+ p[ldsocst.st_size] = '\0';
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+ if (strstr (p, "include ld.so.conf.d/*.conf") == NULL)
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+ {
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+ close (ldsocfd);
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+ ldsocfd = open (LD_SO_CONF, O_WRONLY | O_TRUNC);
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+ if (ldsocfd >= 0)
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+ {
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+ size_t slen = strlen ("include ld.so.conf.d/*.conf\n");
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+ if (write (ldsocfd, "include ld.so.conf.d/*.conf\n", slen)
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+ != slen
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+ || write (ldsocfd, p, ldsocst.st_size) != ldsocst.st_size)
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+ _exit (109);
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+ }
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+ }
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+ }
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+ if (ldsocfd >= 0)
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+ close (ldsocfd);
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+ }
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+
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+ /* If installing bi-arch glibc, rpm sometimes doesn't unpack all files
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+ before running one of the lib's %post scriptlet. /sbin/ldconfig will
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+ then be run by the other arch's %post. */
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+ if (! access ("/sbin/ldconfig", X_OK))
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+ verbose_exec (110,
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+ (char *) "/sbin/ldconfig",
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+ (char *) "/sbin/ldconfig");
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+
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+ if (! utimes (GCONV_MODULES_DIR "/gconv-modules.cache", NULL))
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+ {
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+ const char *iconv_cache = GCONV_MODULES_DIR "/gconv-modules.cache";
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+ const char *iconv_dir = GCONV_MODULES_DIR;
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+ verbose_exec (113,
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+ (char *) ICONVCONFIG,
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+ (char *) "/usr/sbin/iconvconfig",
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+ (char *) "-o",
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+ (char *) iconv_cache,
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+ (char *) "--nostdlib",
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+ (char *) iconv_dir);
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+ }
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+
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+ _exit(0);
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+}
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+
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+void
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+vexec (int failcode, char *const path[])
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+{
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+ pid_t pid;
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+ int status, save_errno;
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+ int devnull = 0;
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+
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+ if (failcode < 0)
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+ {
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+ devnull = 1;
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+ failcode = -failcode;
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+ }
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+ pid = vfork ();
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+ if (pid == 0)
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+ {
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+ int fd;
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+ if (devnull && (fd = open ("/dev/null", O_WRONLY)) >= 0)
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+ {
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+ dup2 (fd, 1);
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+ dup2 (fd, 2);
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+ close (fd);
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+ }
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+ execv (path[0], path + 1);
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+ save_errno = errno;
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+ message (path);
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+ says (" exec failed with errno ");
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+ sayn (save_errno);
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+ says ("\n");
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+ _exit (failcode);
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+ }
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+ else if (pid < 0)
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+ {
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+ save_errno = errno;
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+ message (path);
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+ says (" fork failed with errno ");
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+ sayn (save_errno);
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+ says ("\n");
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+ _exit (failcode + 1);
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+ }
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+ if (waitpid (0, &status, 0) != pid || !WIFEXITED (status))
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+ {
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+ message (path);
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+ says (" child terminated abnormally\n");
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+ _exit (failcode + 2);
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+ }
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+ if (WEXITSTATUS (status))
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+ {
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+ message (path);
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+ says (" child exited with exit code ");
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+ sayn (WEXITSTATUS (status));
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+ says ("\n");
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+ _exit (WEXITSTATUS (status));
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+ }
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+}
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+
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+static void
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+says (const char *str)
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+{
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+ write (1, str, strlen (str));
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+}
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+
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+static void
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+sayn (long num)
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+{
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+ char string[sizeof (long) * 3 + 1];
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+ char *p = string + sizeof (string) - 1;
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+
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+ *p = '\0';
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+ if (num == 0)
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+ *--p = '0';
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+ else
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+ while (num)
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+ {
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+ *--p = '0' + num % 10;
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+ num = num / 10;
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+ }
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+
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+ says (p);
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+}
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+
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+static void
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+message (char *const path[])
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+{
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+ says ("/usr/sbin/glibc_post_upgrade: While trying to execute ");
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+ says (path[0]);
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+}
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