basebuilder_pel7ppc64bebuilder0
6 years ago
1 changed files with 277 additions and 0 deletions
@ -0,0 +1,277 @@
@@ -0,0 +1,277 @@
|
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From ca291153ff2c696696c1406aca6433aab6e412a1 Mon Sep 17 00:00:00 2001 |
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From: Karel Zak <kzak@redhat.com> |
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Date: Fri, 24 Jun 2016 13:36:32 +0200 |
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Subject: [PATCH 79/84] blkdiscard: backport --zeroout support |
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|
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The patch also includes upstream cleanups. |
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|
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Upstream: http://github.com/karelzak/util-linux/commit/0e765365798c54d412e355798ad584a52035f228 |
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Upstream: http://github.com/karelzak/util-linux/commit/a3e91e26467a0f644ee568bb0b3d481591834015 |
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Upstream: http://github.com/karelzak/util-linux/commit/eeae448805c0eb2ef130a6ac301750706bb80420 |
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Upstream: http://github.com/karelzak/util-linux/commit/7154cc892688f3c58cbbcdc2055f2635c1d0ef5b |
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Addresses: http://bugzilla.redhat.com/show_bug.cgi?id=1327886 |
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Signed-off-by: Karel Zak <kzak@redhat.com> |
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--- |
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bash-completion/blkdiscard | 2 +- |
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sys-utils/blkdiscard.8 | 7 +-- |
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sys-utils/blkdiscard.c | 122 ++++++++++++++++++++++++++++++++++----------- |
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3 files changed, 98 insertions(+), 33 deletions(-) |
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|
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diff --git a/bash-completion/blkdiscard b/bash-completion/blkdiscard |
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index 310cdfb..fb3cb1e 100644 |
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--- a/bash-completion/blkdiscard |
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+++ b/bash-completion/blkdiscard |
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@@ -15,7 +15,7 @@ _blkdiscard_module() |
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esac |
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case $cur in |
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-*) |
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- OPTS="--offset --length --secure --verbose --help --version" |
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+ OPTS="--offset --length --secure --zeroout --verbose --help --version" |
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COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) ) |
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return 0 |
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;; |
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diff --git a/sys-utils/blkdiscard.8 b/sys-utils/blkdiscard.8 |
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index 5e094d4..71180e9 100644 |
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--- a/sys-utils/blkdiscard.8 |
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+++ b/sys-utils/blkdiscard.8 |
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@@ -1,15 +1,13 @@ |
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-.\" -*- nroff -*- |
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.TH BLKDISCARD 8 "July 2014" "util-linux" "System Administration" |
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.SH NAME |
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blkdiscard \- discard sectors on a device |
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.SH SYNOPSIS |
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.B blkdiscard |
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+[options] |
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.RB [ \-o |
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.IR offset ] |
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.RB [ \-l |
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.IR length ] |
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-.RB [ \-s ] |
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-.RB [ \-v ] |
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.I device |
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.SH DESCRIPTION |
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.B blkdiscard |
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@@ -59,6 +57,9 @@ Perform a secure discard. A secure discard is the same as a regular discard |
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except that all copies of the discarded blocks that were possibly created by |
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garbage collection must also be erased. This requires support from the device. |
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.TP |
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+.BR \-z , " \-\-zeroout" |
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+Zero-fill rather than discard. |
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+.TP |
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.BR \-v , " \-\-verbose" |
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Display the aligned values of |
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.I offset |
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diff --git a/sys-utils/blkdiscard.c b/sys-utils/blkdiscard.c |
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index 92ca52a..0ba99ee 100644 |
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--- a/sys-utils/blkdiscard.c |
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+++ b/sys-utils/blkdiscard.c |
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@@ -44,43 +44,95 @@ |
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#include "closestream.h" |
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|
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#ifndef BLKDISCARD |
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-#define BLKDISCARD _IO(0x12,119) |
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+# define BLKDISCARD _IO(0x12,119) |
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#endif |
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|
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#ifndef BLKSECDISCARD |
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-#define BLKSECDISCARD _IO(0x12,125) |
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+# define BLKSECDISCARD _IO(0x12,125) |
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#endif |
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|
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-#define print_stats(path, stats) \ |
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- printf(_("%s: Discarded %" PRIu64 " bytes from the " \ |
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- "offset %" PRIu64"\n"), path, stats[1], stats[0]); |
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+#ifndef BLKZEROOUT |
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+# define BLKZEROOUT _IO(0x12,127) |
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+#endif |
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+ |
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+enum { |
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+ ACT_DISCARD = 0, /* default */ |
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+ ACT_ZEROOUT, |
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+ ACT_SECURE |
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+}; |
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+ |
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+/* RHEL: backport from upstream lib/monotonic.c */ |
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+static int gettime_monotonic(struct timeval *tv) |
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+{ |
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+#ifdef CLOCK_MONOTONIC |
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+ /* Can slew only by ntp and adjtime */ |
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+ int ret; |
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+ struct timespec ts; |
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+ |
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+# ifdef CLOCK_MONOTONIC_RAW |
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+ /* Linux specific, can't slew */ |
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+ if (!(ret = clock_gettime(CLOCK_MONOTONIC_RAW, &ts))) { |
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+# else |
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+ if (!(ret = clock_gettime(CLOCK_MONOTONIC, &ts))) { |
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+# endif |
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+ tv->tv_sec = ts.tv_sec; |
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+ tv->tv_usec = ts.tv_nsec / 1000; |
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+ } |
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+ return ret; |
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+#else |
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+ return gettimeofday(tv, NULL); |
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+#endif |
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+} |
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+ |
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+static void print_stats(int act, char *path, uint64_t stats[]) |
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+{ |
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+ switch (act) { |
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+ case ACT_ZEROOUT: |
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+ printf(_("%s: Zero-filled %" PRIu64 " bytes from the offset %" PRIu64"\n"), \ |
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+ path, stats[1], stats[0]); |
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+ break; |
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+ case ACT_SECURE: |
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+ case ACT_DISCARD: |
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+ printf(_("%s: Discarded %" PRIu64 " bytes from the offset %" PRIu64"\n"), \ |
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+ path, stats[1], stats[0]); |
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+ break; |
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+ } |
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+} |
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|
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static void __attribute__((__noreturn__)) usage(FILE *out) |
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{ |
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fputs(USAGE_HEADER, out); |
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fprintf(out, |
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_(" %s [options] <device>\n"), program_invocation_short_name); |
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+ |
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+ fputs(USAGE_SEPARATOR, out); |
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+ fputs(_("Discard the content of sectors on a device.\n"), out); |
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+ |
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fputs(USAGE_OPTIONS, out); |
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- fputs(_(" -o, --offset <num> offset in bytes to discard from\n" |
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- " -l, --length <num> length of bytes to discard from the offset\n" |
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- " -p, --step <num> size of the discard iterations within the offset\n" |
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- " -s, --secure perform secure discard\n" |
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- " -v, --verbose print aligned length and offset\n"), |
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- out); |
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+ fputs(_(" -o, --offset <num> offset in bytes to discard from\n"), out); |
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+ fputs(_(" -l, --length <num> length of bytes to discard from the offset\n"), out); |
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+ fputs(_(" -p, --step <num> size of the discard iterations within the offset\n"), out); |
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+ fputs(_(" -s, --secure perform secure discard\n"), out); |
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+ fputs(_(" -z, --zeroout zero-fill rather than discard\n"), out); |
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+ fputs(_(" -v, --verbose print aligned length and offset\n"), out); |
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+ |
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fputs(USAGE_SEPARATOR, out); |
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fputs(USAGE_HELP, out); |
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fputs(USAGE_VERSION, out); |
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+ |
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fprintf(out, USAGE_MAN_TAIL("blkdiscard(8)")); |
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); |
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} |
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+ |
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int main(int argc, char **argv) |
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{ |
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char *path; |
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- int c, fd, verbose = 0, secure = 0, secsize; |
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+ int c, fd, verbose = 0, secsize; |
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uint64_t end, blksize, step, range[2], stats[2]; |
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struct stat sb; |
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- struct timespec now, last; |
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+ struct timeval now, last; |
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+ int act = ACT_DISCARD; |
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|
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static const struct option longopts[] = { |
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{ "help", 0, 0, 'h' }, |
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@@ -90,6 +142,7 @@ int main(int argc, char **argv) |
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{ "step", 1, 0, 'p' }, |
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{ "secure", 0, 0, 's' }, |
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{ "verbose", 0, 0, 'v' }, |
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+ { "zeroout", 0, 0, 'z' }, |
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{ NULL, 0, 0, 0 } |
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}; |
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|
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@@ -102,7 +155,7 @@ int main(int argc, char **argv) |
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range[1] = ULLONG_MAX; |
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step = 0; |
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|
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- while ((c = getopt_long(argc, argv, "hVsvo:l:p:", longopts, NULL)) != -1) { |
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+ while ((c = getopt_long(argc, argv, "hVsvo:l:p:z", longopts, NULL)) != -1) { |
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switch(c) { |
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case 'h': |
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usage(stdout); |
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@@ -123,11 +176,14 @@ int main(int argc, char **argv) |
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_("failed to parse step")); |
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break; |
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case 's': |
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- secure = 1; |
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+ act = ACT_SECURE; |
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break; |
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case 'v': |
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verbose = 1; |
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break; |
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+ case 'z': |
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+ act = ACT_ZEROOUT; |
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+ break; |
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default: |
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usage(stderr); |
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break; |
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@@ -149,7 +205,7 @@ int main(int argc, char **argv) |
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err(EXIT_FAILURE, _("cannot open %s"), path); |
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|
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if (fstat(fd, &sb) == -1) |
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- err(EXIT_FAILURE, _("stat failed %s"), path); |
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+ err(EXIT_FAILURE, _("stat of %s failed"), path); |
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if (!S_ISBLK(sb.st_mode)) |
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errx(EXIT_FAILURE, _("%s: not a block device"), path); |
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|
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@@ -178,35 +234,43 @@ int main(int argc, char **argv) |
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"to sector size %i"), path, range[1], secsize); |
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stats[0] = range[0], stats[1] = 0; |
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- clock_gettime(CLOCK_MONOTONIC, &last); |
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+ gettime_monotonic(&last); |
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- for (range[0] = range[0]; range[0] < end; range[0] += range[1]) { |
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+ for (/* nothing */; range[0] < end; range[0] += range[1]) { |
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if (range[0] + range[1] > end) |
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range[1] = end - range[0]; |
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|
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- if (secure) { |
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+ switch (act) { |
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+ case ACT_ZEROOUT: |
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+ if (ioctl(fd, BLKZEROOUT, &range)) |
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+ err(EXIT_FAILURE, _("%s: BLKZEROOUT ioctl failed"), path); |
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+ break; |
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+ case ACT_SECURE: |
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if (ioctl(fd, BLKSECDISCARD, &range)) |
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err(EXIT_FAILURE, _("%s: BLKSECDISCARD ioctl failed"), path); |
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- } else { |
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+ break; |
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+ case ACT_DISCARD: |
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if (ioctl(fd, BLKDISCARD, &range)) |
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err(EXIT_FAILURE, _("%s: BLKDISCARD ioctl failed"), path); |
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+ break; |
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} |
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|
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- /* reporting progress */ |
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+ stats[1] += range[1]; |
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+ |
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+ /* reporting progress at most once per second */ |
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if (verbose && step) { |
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- clock_gettime(CLOCK_MONOTONIC, &now); |
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- if (last.tv_sec < now.tv_sec) { |
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- print_stats(path, stats); |
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- stats[0] = range[0], stats[1] = 0; |
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+ gettime_monotonic(&now); |
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+ if (now.tv_sec > last.tv_sec && |
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+ (now.tv_usec >= last.tv_usec || now.tv_sec > last.tv_sec + 1)) { |
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+ print_stats(act, path, stats); |
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+ stats[0] += stats[1], stats[1] = 0; |
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last = now; |
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} |
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} |
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- |
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- stats[1] += range[1]; |
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} |
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- if (verbose) |
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- print_stats(path, stats); |
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+ if (verbose && stats[1]) |
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+ print_stats(act, path, stats); |
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|
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close(fd); |
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return EXIT_SUCCESS; |
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-- |
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2.7.4 |
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