dd: add 'oflag=append'
Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -59,7 +59,7 @@
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//usage: "[if=FILE] [of=FILE] [" IF_FEATURE_DD_IBS_OBS("ibs=N obs=N/") "bs=N] [count=N] [skip=N] [seek=N]\n"
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//usage: "[if=FILE] [of=FILE] [" IF_FEATURE_DD_IBS_OBS("ibs=N obs=N/") "bs=N] [count=N] [skip=N] [seek=N]\n"
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//usage: IF_FEATURE_DD_IBS_OBS(
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//usage: IF_FEATURE_DD_IBS_OBS(
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//usage: " [conv=notrunc|noerror|sync|fsync]\n"
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//usage: " [conv=notrunc|noerror|sync|fsync]\n"
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//usage: " [iflag=skip_bytes|fullblock] [oflag=seek_bytes]"
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//usage: " [iflag=skip_bytes|fullblock] [oflag=seek_bytes|append]"
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//usage: )
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//usage: )
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//usage:#define dd_full_usage "\n\n"
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//usage:#define dd_full_usage "\n\n"
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//usage: "Copy a file with converting and formatting\n"
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//usage: "Copy a file with converting and formatting\n"
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@ -84,6 +84,7 @@
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//usage: "\n iflag=skip_bytes skip=N is in bytes"
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//usage: "\n iflag=skip_bytes skip=N is in bytes"
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//usage: "\n iflag=fullblock Read full blocks"
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//usage: "\n iflag=fullblock Read full blocks"
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//usage: "\n oflag=seek_bytes seek=N is in bytes"
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//usage: "\n oflag=seek_bytes seek=N is in bytes"
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//usage: "\n oflag=append Open output file in append mode"
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//usage: )
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//usage: )
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//usage: IF_FEATURE_DD_STATUS(
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//usage: IF_FEATURE_DD_STATUS(
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//usage: "\n status=noxfer Suppress rate output"
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//usage: "\n status=noxfer Suppress rate output"
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@ -140,11 +141,12 @@ enum {
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/* start of output flags */
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/* start of output flags */
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FLAG_OFLAG_SHIFT = 7,
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FLAG_OFLAG_SHIFT = 7,
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FLAG_SEEK_BYTES = (1 << 7) * ENABLE_FEATURE_DD_IBS_OBS,
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FLAG_SEEK_BYTES = (1 << 7) * ENABLE_FEATURE_DD_IBS_OBS,
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FLAG_APPEND = (1 << 8) * ENABLE_FEATURE_DD_IBS_OBS,
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/* end of output flags */
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/* end of output flags */
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FLAG_TWOBUFS = (1 << 8) * ENABLE_FEATURE_DD_IBS_OBS,
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FLAG_TWOBUFS = (1 << 9) * ENABLE_FEATURE_DD_IBS_OBS,
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FLAG_COUNT = 1 << 9,
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FLAG_COUNT = 1 << 10,
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FLAG_STATUS_NONE = 1 << 10,
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FLAG_STATUS_NONE = 1 << 11,
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FLAG_STATUS_NOXFER = 1 << 11,
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FLAG_STATUS_NOXFER = 1 << 12,
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};
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};
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static void dd_output_status(int UNUSED_PARAM cur_signal)
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static void dd_output_status(int UNUSED_PARAM cur_signal)
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@ -267,7 +269,7 @@ int dd_main(int argc UNUSED_PARAM, char **argv)
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static const char iflag_words[] ALIGN1 =
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static const char iflag_words[] ALIGN1 =
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"skip_bytes\0""fullblock\0";
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"skip_bytes\0""fullblock\0";
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static const char oflag_words[] ALIGN1 =
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static const char oflag_words[] ALIGN1 =
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"seek_bytes\0";
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"seek_bytes\0append\0";
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#endif
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#endif
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#if ENABLE_FEATURE_DD_STATUS
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#if ENABLE_FEATURE_DD_STATUS
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static const char status_words[] ALIGN1 =
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static const char status_words[] ALIGN1 =
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@ -451,6 +453,8 @@ int dd_main(int argc UNUSED_PARAM, char **argv)
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if (!seek && !(G.flags & FLAG_NOTRUNC))
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if (!seek && !(G.flags & FLAG_NOTRUNC))
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oflag |= O_TRUNC;
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oflag |= O_TRUNC;
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if (G.flags & FLAG_APPEND)
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oflag |= O_APPEND;
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xmove_fd(xopen(outfile, oflag), ofd);
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xmove_fd(xopen(outfile, oflag), ofd);
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@ -183,6 +183,7 @@ dd compatibility options:
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iflag=skip_bytes| yes | |
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iflag=skip_bytes| yes | |
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iflag=fullblock | yes | |
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iflag=fullblock | yes | |
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oflag=seek_bytes| yes | |
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oflag=seek_bytes| yes | |
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oflag=append | yes | |
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df POSIX options
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df POSIX options
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option | exists | compliant | remarks
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option | exists | compliant | remarks
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