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annotate libserial-linux/nonblock.c @ 965:2969032bdfac

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fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents fd7b447b99e3
children
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1 /*
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2 * This module contains the set_serial_nonblock() function.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/ioctl.h>
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7 #include <unistd.h>
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8
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9 extern int target_fd;
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10
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11 set_serial_nonblock(state)
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12 int state;
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13 {
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14 ioctl(target_fd, FIONBIO, &state);
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15 }