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Add The Linux Programming Interface under examples
https://man7.org/tlpi/index.html Signed-off-by: chenzhijia <[email protected]>
1 parent 4ba65cc commit 34ca696

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‎examples/tlpi/.gitignore

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/tlpi

‎examples/tlpi/0001-add-ename.c.inc.patch

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From 57d210aa51e9706c3e21156d873bf356527be8c7 Mon Sep 17 00:00:00 2001
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From: chenzhijia <[email protected]>
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Date: Tue, 19 Mar 2024 11:26:27 +0800
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Subject: [PATCH] Linux case base:add ename.c.inc
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add source code ename.c.inc
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Change-Id: Ie31e2ac3908ce46cfb22102d8cc18fa1b961deb4
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Signed-off-by: chenzhijia <[email protected]>
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---
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diff --git a/lib/ename.c.inc b/lib/ename.c.inc
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new file mode 100644
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index 0000000..42642e1
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--- /dev/null
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+++ b/lib/ename.c.inc
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@@ -0,0 +1,39 @@
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+/* ename.c.inc
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+
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+ Built on GNU/Linux x86_64 with glibc 2.38
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+*/
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+static char *ename[] = {
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+ /* 0 */ "",
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+ /* 1 */ "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO", "ENXIO",
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+ /* 7 */ "E2BIG", "ENOEXEC", "EBADF", "ECHILD",
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+ /* 11 */ "EAGAIN/EWOULDBLOCK", "ENOMEM", "EACCES", "EFAULT",
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+ /* 15 */ "ENOTBLK", "EBUSY", "EEXIST", "EXDEV", "ENODEV",
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+ /* 20 */ "ENOTDIR", "EISDIR", "EINVAL", "ENFILE", "EMFILE",
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+ /* 25 */ "ENOTTY", "ETXTBSY", "EFBIG", "ENOSPC", "ESPIPE",
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+ /* 30 */ "EROFS", "EMLINK", "EPIPE", "EDOM", "ERANGE",
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+ /* 35 */ "EDEADLK/EDEADLOCK", "ENAMETOOLONG", "ENOLCK", "ENOSYS",
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+ /* 39 */ "ENOTEMPTY", "ELOOP", "", "ENOMSG", "EIDRM", "ECHRNG",
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+ /* 45 */ "EL2NSYNC", "EL3HLT", "EL3RST", "ELNRNG", "EUNATCH",
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+ /* 50 */ "ENOCSI", "EL2HLT", "EBADE", "EBADR", "EXFULL", "ENOANO",
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+ /* 56 */ "EBADRQC", "EBADSLT", "", "EBFONT", "ENOSTR", "ENODATA",
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+ /* 62 */ "ETIME", "ENOSR", "ENONET", "ENOPKG", "EREMOTE",
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+ /* 67 */ "ENOLINK", "EADV", "ESRMNT", "ECOMM", "EPROTO",
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+ /* 72 */ "EMULTIHOP", "EDOTDOT", "EBADMSG", "EOVERFLOW",
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+ /* 76 */ "ENOTUNIQ", "EBADFD", "EREMCHG", "ELIBACC", "ELIBBAD",
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+ /* 81 */ "ELIBSCN", "ELIBMAX", "ELIBEXEC", "EILSEQ", "ERESTART",
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+ /* 86 */ "ESTRPIPE", "EUSERS", "ENOTSOCK", "EDESTADDRREQ",
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+ /* 90 */ "EMSGSIZE", "EPROTOTYPE", "ENOPROTOOPT",
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+ /* 93 */ "EPROTONOSUPPORT", "ESOCKTNOSUPPORT",
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+ /* 95 */ "EOPNOTSUPP/ENOTSUP", "EPFNOSUPPORT", "EAFNOSUPPORT",
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+ /* 98 */ "EADDRINUSE", "EADDRNOTAVAIL", "ENETDOWN", "ENETUNREACH",
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+ /* 102 */ "ENETRESET", "ECONNABORTED", "ECONNRESET", "ENOBUFS",
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+ /* 106 */ "EISCONN", "ENOTCONN", "ESHUTDOWN", "ETOOMANYREFS",
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+ /* 110 */ "ETIMEDOUT", "ECONNREFUSED", "EHOSTDOWN", "EHOSTUNREACH",
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+ /* 114 */ "EALREADY", "EINPROGRESS", "ESTALE", "EUCLEAN",
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+ /* 118 */ "ENOTNAM", "ENAVAIL", "EISNAM", "EREMOTEIO", "EDQUOT",
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+ /* 123 */ "ENOMEDIUM", "EMEDIUMTYPE", "ECANCELED", "ENOKEY",
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+ /* 127 */ "EKEYEXPIRED", "EKEYREVOKED", "EKEYREJECTED",
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+ /* 130 */ "EOWNERDEAD", "ENOTRECOVERABLE", "ERFKILL", "EHWPOISON"
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+};
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+
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+#define MAX_ENAME 133
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\ No newline at end of file

‎examples/tlpi/0002-fix-setenv-compilation-error.patch

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From f1154cd6558b99aa5827ac98b20a20753dabd865 Mon Sep 17 00:00:00 2001
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From: chenzhijia <[email protected]>
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Date: Tue, 18 Jun 2024 18:19:18 +0800
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Subject: [PATCH] tlpi/proc:fix setenv case
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Remove duplicate functions and invalid commands
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Change-Id: I59d84511356f6da7313844bfad63ac466fd3075f
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Signed-off-by: chenzhijia <[email protected]>
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---
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diff --git a/proc/setenv.c b/proc/setenv.c
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index d396628..d75ae35 100644
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--- a/proc/setenv.c
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+++ b/proc/setenv.c
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@@ -21,92 +21,25 @@
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#include <errno.h>
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int
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-unsetenv(const char *name)
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-{
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- extern char **environ;
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- char **ep, **sp;
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- size_t len;
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-
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- if (name == NULL || name[0] == '\0' || strchr(name, '=') != NULL) {
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- errno = EINVAL;
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- return -1;
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- }
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-
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- len = strlen(name);
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-
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- for (ep = environ; *ep != NULL; )
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- if (strncmp(*ep, name, len) == 0 && (*ep)[len] == '=') {
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-
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- /* Remove found entry by shifting all successive entries
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- back one element */
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-
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- for (sp = ep; *sp != NULL; sp++)
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- *sp = *(sp + 1);
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-
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- /* Continue around the loop to further instances of 'name' */
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-
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- } else {
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- ep++;
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- }
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-
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- return 0;
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-}
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-
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-int
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-setenv(const char *name, const char *value, int overwrite)
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-{
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- char *es;
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-
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- if (name == NULL || name[0] == '\0' || strchr(name, '=') != NULL ||
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- value == NULL) {
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- errno = EINVAL;
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- return -1;
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- }
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-
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- if (getenv(name) != NULL && overwrite == 0)
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- return 0;
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-
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- unsetenv(name); /* Remove all occurrences */
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-
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- es = malloc(strlen(name) + strlen(value) + 2);
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- /* +2 for '=' and null terminator */
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- if (es == NULL)
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- return -1;
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-
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- strcpy(es, name);
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- strcat(es, "=");
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- strcat(es, value);
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-
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- return (putenv(es) != 0) ? -1 : 0;
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-}
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-
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-#ifdef TEST_IT
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-
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-int
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main()
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{
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if (putenv("TT=xxxxx") != 0)
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perror("putenv");
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system("echo '***** Environment before unsetenv(TT)'; "
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- "printenv | grep ^TT");
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- system("echo 'Total lines from printenv:' `printenv | wc -l`");
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+ "env");
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unsetenv("TT");
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system("echo '***** Environment after unsetenv(TT)'; "
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- "printenv | grep ^TT");
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- system("echo 'Total lines from printenv:' `printenv | wc -l`");
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+ "env");
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setenv("xyz", "one", 1);
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setenv("xyz", "two", 0);
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setenv("xyz2", "222", 0);
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system("echo '***** Environment after setenv() calls'; "
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- "printenv | grep ^x");
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- system("echo 'Total lines from printenv:' `printenv | wc -l`");
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+ "env");
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exit(EXIT_SUCCESS);
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}
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-
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-#endif

‎examples/tlpi/0003-fix-memoryleak-in-check_password.patch

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From 03445e7bf9916a58a4b80d7062d577f38ed2b279 Mon Sep 17 00:00:00 2001
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From: chenzhijia <[email protected]>
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Date: Tue, 14 May 2024 16:40:28 +0800
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Subject: [PATCH] tlpi/users_groups:Fix memory leak in check_password
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free memory before program exits
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Change-Id: I28789b5ceaec4aaa45bb13f66cb3f61de1111841
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Signed-off-by: chenzhijia <[email protected]>
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---
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diff --git a/users_groups/check_password.c b/users_groups/check_password.c
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index c142ac7..a70cbb6 100644
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--- a/users_groups/check_password.c
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+++ b/users_groups/check_password.c
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@@ -30,6 +30,22 @@
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#include <shadow.h>
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#include "tlpi_hdr.h"
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+#define fatal(msg) \
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+ do \
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+ { \
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+ free(username); \
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+ fatal(msg); \
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+ } \
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+ while (0)
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+
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+#define errExit(msg) \
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+ do \
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+ { \
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+ free(username); \
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+ errExit(msg); \
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+ } \
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+ while (0)
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+
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int
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main(int argc, char *argv[])
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{
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@@ -53,7 +69,7 @@
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printf("Username: ");
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fflush(stdout);
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if (fgets(username, lnmax, stdin) == NULL)
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- exit(EXIT_FAILURE); /* Exit on EOF */
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+ goto err; /* Exit on EOF */
45+
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len = strlen(username);
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if (username[len - 1] == '\n')
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@@ -85,12 +101,17 @@
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authOk = strcmp(encrypted, pwd->pw_passwd) == 0;
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if (!authOk) {
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printf("Incorrect password\n");
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- exit(EXIT_FAILURE);
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+ goto err;
54+
}
55+
56+
printf("Successfully authenticated: UID=%ld\n", (long) pwd->pw_uid);
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58+
/* Now do authenticated work... */
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60+
+ free(username);
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exit(EXIT_SUCCESS);
62+
+
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+err:
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+ free(username);
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+ exit(EXIT_FAILURE);
66+
}

‎examples/tlpi/0004-fix-compilation-error.patch

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From 65230c70d69b253028c0f912dcd1ae0cb7446015 Mon Sep 17 00:00:00 2001
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From: chenzhijia <[email protected]>
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Date: Wed, 30 Oct 2024 10:52:48 +0800
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Subject: [PATCH] tlpi/sockets:Fix compilation error
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Fix compilation error in qemu
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Change-Id: I854ed64d163398807a07fa697bdea89bfab77236
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Signed-off-by: chenzhijia <[email protected]>
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---
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diff --git a/sockets/list_host_addresses.c b/sockets/list_host_addresses.c
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index 4db58f6..e1864c8 100644
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--- a/sockets/list_host_addresses.c
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+++ b/sockets/list_host_addresses.c
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@@ -23,7 +23,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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-#include <linux/if_link.h>
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+//#include <linux/if_link.h>
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int
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main(int argc, char *argv[])
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diff --git a/sockets/sendfile.c b/sockets/sendfile.c
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index 54549d7..3697099 100644
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--- a/sockets/sendfile.c
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+++ b/sockets/sendfile.c
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@@ -17,7 +17,7 @@
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#include "tlpi_hdr.h"
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#define BUF_SIZE 8192
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-ssize_t
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+static ssize_t
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sendfile(int out_fd, int in_fd, off_t *offset, size_t count)
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{
37+
off_t orig;

‎examples/tlpi/Kconfig

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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config EXAMPLES_TLPI
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tristate "The Linux Programming Interface Example"
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default n
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depends on ALLOW_GPL_COMPONENTS
10+
---help---
11+
Enable the tlpi
12+
13+
if EXAMPLES_TLPI
14+
15+
config EXAMPLES_TLPI_PRIORITY
16+
int "Task priority"
17+
default 100
18+
19+
config EXAMPLES_TLPI_STACKSIZE
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int "Stack size"
21+
default DEFAULT_TASK_STACKSIZE
22+
23+
endif

‎examples/tlpi/Make.defs

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############################################################################
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# apps/examples/tlpi/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
5+
# contributor license agreements. See the NOTICE file distributed with
6+
# this work for additional information regarding copyright ownership. The
7+
# ASF licenses this file to you under the Apache License, Version 2.0 (the
8+
# "License"); you may not use this file except in compliance with the
9+
# License. You may obtain a copy of the License at
10+
#
11+
# http://www.apache.org/licenses/LICENSE-2.0
12+
#
13+
# Unless required by applicable law or agreed to in writing, software
14+
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15+
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
16+
# License for the specific language governing permissions and limitations
17+
# under the License.
18+
#
19+
############################################################################
20+
21+
ifneq ($(CONFIG_EXAMPLES_TLPI),)
22+
CONFIGURED_APPS += $(APPDIR)/examples/tlpi
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endif

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