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writeall.c - sbase - suckless unix tools |
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writeall.c (318B) |
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1 /* See LICENSE file for copyright and license details. */ |
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2 #include <unistd.h> |
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3 |
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4 #include "../util.h" |
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5 |
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6 ssize_t |
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7 writeall(int fd, const void *buf, size_t len) |
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8 { |
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9 const char *p = buf; |
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10 ssize_t n; |
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11 |
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12 while (len) { |
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13 n = write(fd, p, len); |
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14 if (n <= 0) |
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15 return n; |
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16 p += n; |
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17 len -= n; |
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18 } |
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19 |
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20 return p - (const char *)buf; |
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21 } |
